How close can separation between two aircraft be during landing?
during visual landing clearance?
Specifically, I refer to this Aviation Herald Report where:
When the Boeing 777-300 was about 2.1nm before touch down a BAe Avro began its takeoff run on runway 08R. The Boeing 777 was subsequently cleared to land on runway 08R, winds from 130 degrees at 7 knots.
When the Boeing 777-300 crossed the runway threshold, the Jumbolino was climbing out still short of the runway end.
(Source: www.avherald.com - Singapore B773 at Munich on Nov 3rd 2011, runway excursion)
Is it typical for two aircraft to be so close during landing? i.e. Essentially both landing & departing aircraft are simultaneously overflying the same runway but at opposite ends.
How much closer would cause the landing aircraft to abort? Would one proceed with landing even if when one crossed the threshold the other craft was just rotating?
There's other things that went wrong in that incident, but I'm only asking about the close separation in the landing clearance
visual clearance aspect.
PS. I've edited the question to remove a confusing misunderstanding. It was apparently not a visual clearance.