I would think that most of those warehouses operate on a FIFO system, so there might well be some lag in the distribution. Also you've said warehouses, so any of those could have re-distributed the items to any of their customers.

I don't think anyone can deny there is simply no paper trail, but there is also a clear lag in the usual distribution channels. Obviously the tape got somewhere within that time frame or the intruder would not have been in possession of it, but just how far would it have been most likely to have travelled.

note; I wonder if the company officials could be persuaded to realize that their silence is aiding the police who conducted a media campaign of intimidation rather than an investigation.