I think Chelsea will qualify for the Europa Conference League phase because I see Chelsea as the strongest club in this qualifying round, Servette is a weak club so it is not difficult for Chelsea to beat them again in the second leg even though Chelsea is playing away, English clubs are always favorites in UEFA competitions, it is very embarrassing if Chelsea does not qualify it is a kind of insult to them, Chelsea's attacks have been very strong lately I think they will add a bigger aggregate in the second leg later.
If servette for any reason wins Chelsea, I will be very disappointed in Chelsea because I believe Chelsea is way beyond both in form and in their strength, relatively Chelsea's depth is even better than that of servette. It may not be a really interesting game because it's going to have dominance from one side except they may be able to maintain a balance at some point, but then I still feel Chelsea will do very and dominant the game and make sure they win because they are going to make sure they try to make it possible to win their games and give them an edge for the season.