The moment when the UCL starts will probably be a good moment for Juventus, because maybe Inter Milan will start to have to divide their focus. Namely in Serie A and at UCL. So it is possible that Inter Milan will even start playing more carefully in Serie A to avoid injuries to their squad players so they can still perform optimally in the UCL.
This is a possibility but I doubt this will affect Inter. Inter have been playing in the Champions League and the Seria A all season long yet they're still at the top of the table. Inter are highly motivated to win the league title this season and they're in good form.
The Italian Cup win is an extra motivation.
Juventus is also in good form but I feel Inter is better. A difference between them is that Juventus don't have players that are currently hot as Inter Milan players.
Lautaro Martinez is currently on fire and he's leading Inter's attack very well. It's going to be a tough battle for both teams but I feel Inter will win the league.
It's actually not about how well they're currently buzzing but, how far can they continue consistently? They remain the best attacking side in all of the Italian Seria A and that alone has been obvious with the numbers they've been scoring.
Winning the Super Cup was a massive development and boost, this is now the very first trophy they've wonnamd they should be very happy as hell.
Max Allegri is also a great coach, we'll wait and see until the end of the season if he can leapfrog Inter Milan this very season. Juventus haven't made good attacking signatures but the players within has the zeal and ambitions to move higher.
Juventus has some very hard matches towards the end of the season and that might be a time when Juventus will start to lose the consistency. I think Juventus is a good team and they are doing very well right now though. Juventus has done a good job defending this season so far. But Inter has done so well scoring, they might be in trouble if they also don't start scoring more. I think the way Inter is scoring, might trump the defending from Juventus. But that's just my thought. Juventus will be hoping that Inter loses their next match. Fiorentina is not in good form though. So I don't think Juventus should expect a lot from them in this match against Inter