UA gives me these 2 itineraries, one connecting at MUC, one connecting at FRA, with 1hr and 1hr20m connection time to make the flight to EWR. We have another US domestic flight after that but there are 2+hr layover, I hope would be enough with GE.

Can the knowledgeable folks here tell me whether the connection time is enough to make the US bound flight?

VIE-MUC MUC-EWR
1:45pm-2:45pm, 3:45pm-6:45pm

VIE-FRA FR-EWR
10:30am-12:00pm 1:20pm-3:40pm

We would prefer the one FRA-EWR because it gets us home almost 3 hours earlier.