I'm with Al shuffler on this.
My personal best on a single runway 'oop north', was 57 in an hour, one of my colleagues achieved 60, which is still the record, (I believe).
Landing clearances were always given when the R/W had been 'vacated', or a 'land-after' if it was safe to do so.
'Keep the pilots in the picture' was how we were taught. It was sometimes played extremely tight, but we received few complaints from the 'customers'.