This may have no bearing on the accident, but I noticed on FR24 that the runway on which this happened (34R) was the departure runway at the time, traffic was landing on 34L. As far as I can see there had been no recent landings on 34R. I presume JAL516 had been cleared to land on 34R, no one seems to have the ATC recordings so we can't be sure what happened. But clearly one of these aircraft was in the wrong place and the reason for this is not clear.