Games that mix different mechanisms in their play are known as compendium games and typically fall into one of two categories. Either the games consist of other smaller games played in a predetermined sequence or sequences chosen by players, or the games consist of phases, that have multiple mechanisms mixed within them at once.
For these types of games, the objective varies from deal to deal. Sometimes the objective may be to avoid taking tricks and then the next hand you will be trying to win tricks. It all depends on the particular game you are playing and the sequence you are playing it in.
For these games, there is no separation between games. Instead, there is one game that is split into phases and among these phases are multiple different mechanics that are played alongside each other or played alone in hands that lead to the next mechanic in the next hand.