Even upon all this, Chelsea are still the favourite here because looking at their head2head record against Spanish teams especially the other teams apart from real madrid and Barcelona, Chelsea always comes out on top, though the real betis team has players in their ranks to give Chelsea problems, but I still believe that Chelsea will be too strong for them.
As for the two days rest and four days rest of real betis team, it doesn't really matter because these teams especially Chelsea are used to playing in Europe, so it's not going to be a new thing for them, which I equally don't believe that it will be enough reason not to win this final.
Though since this is football most people will argue that anything can still happen, but in my own opinion, Chelsea will be too strong for this real betis side, and they are going to be crown champions of the uefa conference league at the end of this game.
Yes, Chelsea actually remained the favourite team to lift the conference league trophy against Real Betis but there is no guarantee and I won't place a direct bet on them to win but rather choose the goal options bet. Chelsea last match against Nottingham forest was a win for them but watching that match, I wasn't impressed with that performance and it wasn't convincing for me to have high hope on Chelsea.
Of course, I root for them to win but we should not overlook the realities on ground to give them false hope. Real Betis as well is not a stronger opponent but I believe they'll give Chelsea a tough time.