Seven days is no “testing period”.
It is and will be only a period of R&R and resupply on the part of the Taliban. Once direct Taliban-Afghan government direct talks open on the 8th day, then as the talks drag on, the rested and resupplied Taliban will use violence - as usual - to put pressure in the negotiations.
Dreams of peace will hit the hard reality of the nature of the Taliban.
What will the U.S. do then?
It should be simple. Pull out what we want to keep. Arm the northern alliance to the teeth and destroy what’s left but first you’d have to pry the State Departments lips off the Taliban’s ass.