Originally Posted by
canadianpilgrim
I would estimate it was 2,500 feet lower and less than 5,000 away.
2500' is significantly more than the minimum vertical seperation required between aircraft. 5000' is also more than sufficient for lateral seperation during the descent phase (ICAO requires between 2500' and 3400' lateral seperation for dependant/independant approaches).
A near miss is defined as a violation of seperation to within 500' without collision. Judging by what you describe, you had at least a FIVEFOLD margin of safety.