Your original question was "Is there anything about this season which makes you believe that he'll get it right at some point?"
My response was to point to very promising aspects of the season, ones that make me believe he can and will eventually get it right (especially with the right personnel), rather than a knee jerk view of growing pains and a bad defeat today.
If you would like to reframe your question we can discuss that, as well.
No, no need to reframe or rephase it. What are the promising aspects of the CL so far? Beating Monchengladbach 4-0 at home? Or just the Barca win? (Which was brilliant as is the one positive I can think of). I think it's strange to consider a start to a season as a positive when it all falls away after that.
We've had good spells with plenty of managers, and have had great one-off wins with plenty of managers, but I just find it hard to see anything from this season that could really be enough to make you see evidence of this going somehwhere.
And it's not like he's got another managers squad completely. He's been influencing signings for a year at least. Conte hasn't, and he hasn't needed such a big time to transition a team who finished TENTH last season.