The forward joined the London club from Club Brugge for £30m in July 2024.
More than halfway through the campaign, Brentford are in a dream scenario.
With victories in their last five outings, and a Brazilian striker scoring the goals, suddenly Bees fans are dreaming of thoughts of trips to European capitals next season.
A comprehensive 3-0 win over Sunderland moved Keith Andrews' side into fifth in the Premier League – a position that was sufficient to secure European football last term.
Only table-toppers the Gunners have collected more points over the past six games.
There is a significant distance to go yet but Brentford are squarely in the race for European football.
No one was predicting this last summer.
The former head coach had left for Tottenham after a seven-year stint in charge, a period in which he had not only got the club promoted but also cemented them in the top flight.
Skipper their Danish midfielder left for the North London club and goal-scoring duo two key forwards – who scored a total of 39 goals in 2024-25 – were also sold, joining United and Newcastle United respectively.
Set-piece coach Keith Andrews was promoted to succeed the Dane, while there was a notable absence of a centre-forward among the summer signings.
A year of difficulty, possibly even the drop, was forecast. But here we are in the new year with Brentford in the upper echelons.
So, what is behind their success?
Brentford's decision not to sign another striker was in part down to timing, with one forward's move not being finalized until the final day of the window.
But they also knew they had a £30 million striker already ready and waiting.
The 24-year-old joined from Belgium in July 2024 for a then-record fee, but was hindered by fitness issues in his first campaign, going without a goal in eight appearances.
Thiago has set about making up for lost time this season, though, with his double against the Wearside club taking him to sixteen league goals – the highest tally by a Brazilian in a single Premier League campaign.
Considering the countrymen who have preceded him, that is a remarkable feat, especially with 17 games remaining.
"He has been a breath of fresh air," pundit an analyst said. "He's a physical specimen, quick, powerful, but more skilled than people think. Good with his feet, both feet, he can score with both. You can see he's brimming with confidence. His statistics are fantastic. He must be so proud. That's a big compliment to him."
That only a trio of global superstars have scored more in any of Europe's top five leagues to this point underscores the standard he is playing at.
And it is not just the quantity but the crucial nature of the goals that have been so important for Brentford.
His first goal against the opposition was his 7th first goal of a game of the season. Considering how often we are told the importance of the first goal in a game, having someone you can depend on to take that first big chance cannot be underestimated.
Prior to the game against Sunderland, no player to have attempted at least 30 shots this season has a better shooting accuracy than the striker's 59.1 percent.
He hits the target. Achieve that consistently and the goals will – and have – come.
Given the struggles he had earlier in life, where he labored in construction to provide for his family following the death of his father, perhaps it should be no surprise that pressure on the pitch is something he handles with ease.
"Our scouts deserve a lot of credit for the kind of players they bring in and characters," Andrews said. "This is really impressive. He is a really unique person who has fitted into life very nicely. He has had to earn this path. He has earned his journey and grafted. He has got real determination about his personality. He is developing his abilities constantly and we are discovering more and more about him. He is a pretty all-round centre-forward."
Their star striker is the headline act but the team are not and have never been a one-man band.
While they had key individuals – a host of talent – under Frank, they were always seen as a team more effective than the individual components.
The fear was that once the Dane left, that may not be the case, and that the collective quality of their parts alone might not be enough to stay up.
As a result, appointing their set-piece coach, with no previous managerial experience, and just a year at the club was seen by those outside the club as a gamble.
A first managerial job is a test for anyone, especially when it comes in the Premier League and having made the jump from specialist coach to the manager's office.
But given that Ipswich Town manager Kieran McKenna was the only other alternative that the hierarchy looked at, they were clearly convinced they had the correct candidate.
To date, as often seems to be the case with the brains trust at Brentford, it looks as if they were vindicated.
The new boss won just one of his first 5 league games in charge but significant home victories against United, the Reds and Newcastle have followed.
Results that, following their brilliant recent form, could prove all the more important in the pursuit for Europe.
"We're in good form and playing really well. We are playing with courage and belief in everything we do with or without the ball," he added. "We're happy with how we are going but we want to keep improving."
In a league where fourth and 15th are currently separated by just eight points, they have little choice, because things could rapidly look very otherwise.
But, for now, The Bees are defying the odds. And the longer that continues, the closer to fruition those aspirations of Europe will become.
Elara is a passionate gamer and tech writer with years of experience covering industry trends and game analysis.