Close call into JFK last night.

While I was out walking my dog last night and watching the arrivals into JFK I thought I saw two A/C that looked kinda close together. I'm used to seeing all sorts of arrivals into the twos as I live near the 135 and SS pkwy. Its here where they funnel all the arrival traffic into the base leg for JFK. Upon checking passur today, at approx 1939 last night I show AWE(US AIR) # 14 a A320 @ 3100 ' and almost directly below it FRL # 168 a E145@ 2900'. I know sometimes passur gives erroneous readings but this one made my heart jump a beat.