Well i guess I'd better defer to your distance judgement, there's no way i could pick the distance to a tenth of a nm.
I'm still confused though. If you saw and heared it, you must know we were on the ILS because that's what we'd been cleared for, and that we were in the landing configuration. What else would you call the manoeuvre where one climbs away from the runway, and reconfigures from landing to enroute configuration?
And just to be clear, I don't know what the separation was which is why I estimated it to be less than a mile. I'm surprised that it was 2.3 miles but even that is less than the 3 nm separation that I understand is required. From where I sat it looked very close.