They need simple majority to end filibuster, and simple majority to confirm. Longest individual filibuster was 24 hours, longest group was 57 days, both were southern senators blocking civil rights bill, not proudest moment. Nuclear option just allows the simple majority instead of the 60 vote super majority. But sounds like they have the votes, based on the silent vote, so at some point they'll break the filibuster and say enough is enough I suppose, but I think they would have to do that between speakers, which is why we sometimes have long individual filibusters, Cruz went 18 hours over Obamacare. I think they may have successfully pushed confirmation back an additional day though since sessions has to resign from Senate, unless he can make that effective immediately once the votes are in.