We've also seen stories saying he's gone after SC wraps up, so maybe this is a sign we've got less than a month now…
https://www.nbcnews.com/politics/justice-department/rod-rosenstein-plans-leave-justice-department-after-new-attorney-general-n956571
https://abcnews.go.com/Politics/rosenstein-expected-depart-doj-coming-weeks-attorney-general/story?id=60252611