the only one who's interested as primary 1500 guy is asbel who's gone 1'43.1 twice
if you watch those races, he dawdles the 1st lap & something like 10 - 15m behind mid-49 pacer at the bell & trying to run the whole race in last lap ( more like last 200 )
if he'd bothered to run a faster 1st lap, he obviously woudn't have been as strong 2nd lap, but he wouda likely got his time down to high-1'42 ( maybe 1'42.7/1'42.8 )
that's not a bad time for a 1500 running an 800 off just 1500 training