If you’re going to use a hypothetical scenario you have to keep it the same throughout the argument. You can’t propose one, take my answer, and then add in adendums and act as though I addressed those addendums.
In the scenario given, at no point was the kiss between the engaged described as “quick”.
It ia simply absurd to say that a person could “make out” with their spouse-to-be and not get any sexual pleasure or enflamed desire out of it.
If the lingering passionate kiss in the park excites sexual pleasure and lust, it is gravely illicit and likely a mortal sin.
Edit: it seems as though the OP used “making out” and not “passionate kissing” which further supports my point. The OP should not listen to those priests on this issue, but rather he should respectfully and gently correct them, and perhaps inform their bishops.