DAPT - thank you for posting a link to technical specifications. It would seem that the P2-T2 does have hydraulic assist in the fenestron hub. Detail can be seen in walkaround pics like this one:
credit: pierric boudehen on prime portal
I cannot find any drawing of the gears but I might expect to see a rotation ratio of, say, 5:1, with actual tooth ratio of say 51:11 so as to maintain even wear. If there were to be localised tooth damage on both gears then the damaged areas would meet only infrequently, which might account for the periodic graunching noises heard by one earwitness.