Exactly.
I have three accounts and I make tests on one of them. I've won as much the same games, if not more, by staying out than by being present as a manager. I manage the same amount of comebacks present or not present. And I manage the same amount of comebacks if I am present and do substitutions or no substitutions. It just doesn't make any difference. It doesn't.
The penalties are proven to be decided beforehand, there's no question about that. It's there for you to test, while they don't cover up the bug. Period. So, probably the rest is decided as well.
If games that go into extra-time have taken much longer before going in play, what does this tell you? Coincidence?
Anyway, this was my team that won the Champions League completely undefeated (10-3-0), completely unmanaged:
Explain.