I think there have been a couple of
threads on TP longhaul J.
Expect good food, very good wines, slanted seat (ok for day flight, nighttime it's another story), and variable service (other great engaged crew or hidden in the galley). I haven't flown TP longhaul C in a few years, but if you 're ok with LH old (current) Biz seat, TP is not worse IMO.
Your 60 minutes connection should be fine, as your TP6700 is in fact LH1166 which has a decent on time performance (Can be worse during winter due to FRA snow)
https://flightaware.com/live/flight/DLH1166
LH IME gets an airbridge, so you'll be directly at the terminal.
TP lounge is great and should give you some time for a (quick) visit if you arrive on time. You need to go through passport control for TP 103.