If you are a great dramatic actor then you often don't know if people are enjoying your stuff at all because they are sitting there in silence. But with comedy it's a simple premise. If it's funny people laugh. If it's not they don't.
If you start to disrespect the character you're playing or play it too much...
The last person they expected to connect with a screenplay was the comedic...
To walk through the ruined cities of Germany is to feel an actual doubt about the continuity of civilization.