Digging into memory.............Bellhousing is wet but there is a scavenge system. Check the oil scavenging in the bell housing.
There is a cast aluminium scavenge scoop in the bell housing. If it has become loose, broken or worn away by the scavenge ring (like a round cake tin) after it came loose, the bell housing will fill up.

Tim B
Hampshire , England.
PS if you ever need to separate the engine from the transmission you will need to loosen the scoop fastening capscrews so that it can be "extracted" from the scavenge ring.