Nemesis? Hah! The rule is pretty clear that the suppport is not cut by an attack from the province to which the support is being given, and here the unit is not being dislodged, it is remains in its province due to the beleaguered garrison rule.

My understanding is (and perhaps it is because i play a lot of variants), although I dont have anywhere near the experience of my nemesis.. Mr Cohen..

The 'beleagured garrison' rule is in effect that the unit does not have to retreat because it is attacked by 2 opposing attacks of equal strength.

It does not imply that the unit still retains it's supporting power bceause it is under attack. It merely does not have to retreat. I'd call this a soft hold because i've been talking to Kornel too much.