Originally Posted by
hotturnip
The OP did that. Only the return flight is on UA, as I read the description.
I will say that my personal (limited) experience with UA is that they feel seat assignments are just a suggestion. I've had seats changed and dropped with them at a far higher rate than any other airline. YMMV.
Even more… the title is completely wrong. OP should not „outright ridicule Swiss“, OP should blame UA not LX