Interestingly enough, both versions could be correct.
About a year ago I was happily tootling up the Light A/c Lane Nth of BK when SYD RDR gave a call to someone in my position. Intrigued, I answered. Apparently, I was in danger of collecting a QF B767 at 3,000ft on a right base for the 16R ILS. Turns out my Mode C height box was pushing out an ALT readout 1,000ft higher than actual.
The bloke was also disturbed [by his tone of voice] that I could see the B767. Funny, how on a CAVOK day, you can't see any CTR/CTA boundaries marked in the sky [back to US/Oz ATCO cultural differences....sorry
]
Had we been in another place&time, there could have been a dreaded incident which in fact was a non-event. Equally, with RDR services close to GA airports, it's worth "TALKING TO ATC" to check your transponder readout every now and then.
G'day & Happy NY
