More precisely not two teams, but reserve players who are as good as the main players in the club so that the club does not experience a sharp decline in strength when there are several main players who are injured due to playing optimally in all competitions including in difficult competitions such as the Champions League. However, the problem for some clubs is that having reserve players who are as good as the main players is not easy because players who have good talent will certainly be very reluctant to sit on the bench.
exactly, the problem of reserve players is very important in football teams
it is always necessary to have a good balance between starters and reserves to avoid drops in performance due to what in your opinion, due to the fact that they play so many matches, they don't even have time to rest