I'll theorize the software that was used to determine vulnerable voters (can't remember the term officially used) such as elderly, moved, homeless, dead, etc. was used as a database to request Mail-in ballots. When they processed the list and made the requests, they would all arrive within a one or two day window and their magnitude would dwarf all prior "organic" requests. So Lindsay might call this "at the exact same time". Just my interpretation. The requests arrived in an inorganic fashon., lumped together.