jmm
A rather confused and confusing comment, I thought. Whether operating with or without surveillance equipment, ATC is not going to deliberately descend an IFR flight to the same level as a VFR flight without a mile or two of safe distance between them, plus of course, timely traffic information. At least, I hope that is how you operate. Of course it will have to be borne in mind that the VFR, if slow, may be flying only just below the cloudbase and the aircraft may only have each other in sight fairly late. But as discussed earlier, that is probably how some of them are flying at the moment! I don't follow how you end up with the closing melodramatic scenario.
2 s