Swiss Air and Edelweiss are really screwy right now, so be careful that what you are looking at is a real flight.
I found a nonstop Edelweiss ticket from Tampa to Zurich and I even went on the Edelweiss website to select seats for this flight. The plane was showing wide open. So I figured I'd wait a couple of weeks to book to see how covid was shaking out during August. Meantime, I planned a whole trip to Switzerland based on this nonstop flight.
When I went back to Edelweiss / Swiss last week to purchase the tickets, the nonstop flight had vanished! It turns out Edelweiss never did reinstate their Tampa nonstop, which has been cancelled since March 2020. In further research, I also noticed that United seems to have "taken over" the Swiss flights to Zurich out of ORD and IAD. Looks like those too, were never reinstated.
I refuse to fly on a domestic carrier right now (they are absolutely horrible) unless it is alaska or southwest, and my covid rule is no connections unless you absolutely can't avoid it.
We are now booked on a real Air France flight to France and Switzerland will wait until next year.