I'm looking at buying a Lufthansa ticket which goes TLL-MUC-FRA-ORD.

My question:
Would I have enough connection time:

35 min at MUC
65 min at FRA

Seems tight, but LH system is allowing me to book it.
I assume there are no terminal changes, but I understand I'll have to go through passport control at FRA. (I'm a US citizen)

Thanks for the suggestions.