I think what ur saying is probably true. But it seems like if Q and C in Europe or most is Hunnic. It is extremely rare i would guess since the Huns conquered so much for over 100 years they had large armies so mainly men. So those men had kids so since there were some many u would think they would leave more y DNA. Maybe the leaders were Huns while the armies later on were people from Germanic and Slavic ancestry. It is kind of the same story with east Germanic tribes Vandals and Goths who technically conquered almost all of non Roman Europe and ruled it without sop until the Huns. THey were in eastern Europe for a very long time but Germanic R1b S21, i guess most I1 would be from them, then some I2a2, and R1a Z284 but at the most it is average of 5% of Y DNA in most parts of eastern Europe they were in. Except Poland has the most probably because it is closest to were the migrated out of. I think the east Germanic tribes genetically were not really that German they came mainly from the native people It might be the same for later Huns. Because were did they go did they just disappear.