Possible overlaps — review before acting. Match rule: a slot holding more patients than that provider's template has ever run (learned from 6 months of checked-out visits), or a booking sitting on a "do not double book" block.
Drop the all-appointments export here or
Flags a slot booked beyond what the provider's template actually runs — capacity learned from 6 months of checked-out history — and appts booked over a "do not double book" block. Parallel columns and legitimate doubles the template supports are ignored.