It'll be a tricky needle to thread for Bora, but they have to drop Bennett (and Ewan, Bol, Viviani, etc) over the early climbs, without dropping Sagan, and then reel in as many of the break as possible over the remaining kilometers, probably with very little help from the rest of the peloton, control attacks over the 2 late cat 4s, and then with minimal leadout (and possibly some Quickstep disruption from Alaphilippe and Jungels), set Sagan up to beat Coquard, EBH, Trentin and possibly vanAert in the sprint for whatever points are still on offer.
If they pull back 20 points on Bennett, it'll be a very good day for them. Which shows the size of the task they have.