Partway during Discovery, Michael Burnham gets an object delivered, but
it appears to be the telescope that both Michael and Phillipa used to observe the Klingon beacon in Episode 1. This telescope should have been destroyed with the Shenzhou in the Battle of the Binary Stars and there apparently was no recovery made of the Shenzhou given that a later episode has the Klingons using parts from the Shenzhou in their own plans.
The easy answer is 'continuity error ' - but is there another explanation?