Debatable. If they showed even a hint of having chemistry, don't you think Fiala would've gotten a longer look than he did?
As an aside, why do so many fans want to stack all the top players on a single line? During Chicago's run, Kane, Toews and Hossa were rarely on the same line unless it was end of the game or power play. I have no issues with trying Boldy with Kaprizov, but if Boldy shows that he can drive a line on his own, I think it would be a waste to team him up with #97. Spread out the scoring across multiple lines vs concentrate the scoring on one line.