As both aircraft are under air traffic control and have been given traffic on each other, in the case of an engine failure wouldn’t they look out and avoid each other? It is called “alerted see and avoid.” I understand that at major airports when 747s have been given a visual approach and instructed to sight and follow another aircraft, that is what they do. They look out (using “alerted see and avoid”) and do not run into the other aeroplane.
Dick,
I am curious to know whether you have experienced an engine failure before?
I have - 4 times; one of which catastrophic at <400ft is a single and I can assure you that the last fecking thing on my mind was looking out for other traffic.