I think all the talk about the approach is largely irrelevant other than MAYBE adding a little more loading to a single pilot who had flown from Italy making two pickups enroute with all the extra workload that would have entailed.
One big point not covered is the advisability of allowing an aircraft to enter a point where another aircraft could pass closely overhead.
An aircraft ready to go before another on approach should be lined up from an ajoining taxiway directly onto the runway and onto the numbers! The aircraft should have been instructed to line up not held some way back on a starter extension.
Had the aircraft been sitting on the numbers there would be NO room for confusion which there obviously was in this situation.
Pace