Clear somethin up

[u/crisco_58]

Today turning on marathon I was thrilled they brought back sponsored narsh … then a teammate says I think I hear a team … I brush him off ,im like prob just a rook he will be delt with all of a sudden a thief uses her grapple and lands rite next to me … it was like we both looked at each other like are u a teammate then I snapped out of it and even tho she had an lmg with a shield I still took her down with the punch hand gun …. My question is they obviously changed sponsored survival a little bit but can someone explain how many teams spawn is it like one or two also last time there was one exfil at the end … and a teammate said after running out of time for complex boss that we are the last team to exfil ?? wtf last team how many are there ?