Hi,
Long time that I connected through Frankfurt (avoided it) but maybe this is the year to do it. I have two options both one ticket/ on LH and in business
HAJ-FRA-EWR arriving FRA 12:20 and departing 13:20 or arriving 11:30 departing 13:20 >> 1h or 1h50min
With long distances and possible secondary security,..... I would probably go for the longer connection or is it "easy" because the gates are close?