I'm familiar with terminals 2F and 2E, but not so much with terminal 1 (only two departures so far, but no connections). What about the following connection on separate tickets:
LX632 ZRH-CDG 07:35-09:00
WS81 CDG-YHZ 11:20-13:35
Both flights arrive and depart at terminal 1. I checked the on-time performance of LX632 and it has been late only once in the last 12 months. Unfortunately there is no online check-in for WS flights departing from CDG, so I need to show up at the counter no later than 10:20. The good thing is that I will travel with hand luggage only. But still, I'm unsure whether I should travel to CDG the day before.