The F-15s, with very good
radars, were not able to pick up and understand where the F/A-22s
were, and the F/A-22 was looking at the F-15s all the time.”

As I said numerous times no old fashioned backscatterer radar,no matter how
good they are,no matter if they are airborne or ground based, wont be able to
see f22 frontally,until its too late.
Thats the reason why air force develops an "airborne" multistatic system using
UCAVs.
Secretary of course forgat to mention that.