Hello again
Rava answers Rav Chanina's question on R' Yochanan as follows "whatever the Get leaves out, the husband's death completes" The answer seems to say that the Get started the termination of the marriage, and the Misa completed it. (that they work in tandem together to accomplish the termination of the marriage, that what 1 left out the other completed)
But how can Rava give this answer? Rava himself said earlier in the name of Rabbah (Daf 51), that whatever is not Zeh Achar Zeh, ... Afilu b'Bas Achas Eino. And a Get is never effective (not "Chal") to release her after Misa, ... and neither is Misa effective to release her after Get. Just like Achos Ishta is not "Chal" if he is married to her sister So how could they work together here, as Rava proposed in his answer?
I know I am wrong in my comparison but I don't know why
Thank You very much
Nosson Tzi
Here, on the contrary, it is b'Zeh Achar Zeh, because the Get starts the termination of the marriage, and the Misah completes it, as you say. The Get ("Zeh") is followed by the Misah ("Achar Zeh").
The Ramban here explains that the Get takes her out of the husband's domain and therefore she no longer can do Yibum. It is only when the husband dies that she may remarry someone else.
So each of the Get and the Misah achieve their respective goals. The Get is effective to make Yibum impossible, and the Misah does release her after the Get, so that she may marry whoever she wants.
Kol Tuv,
Dovid Bloom