First of all , this is the 2007 studies which includes other illyrians
http://www.anthroinsula.org/resources/Iliri-english text version.pdf
My conclusions are
1- There where no germanic people in Noricum until 600AD ...the Bavarians
2- The austrians first appeared in 998AD in noricum
3 - The Venetic where in between the raeti and illyrians in present area of Innsbruck with archelogical "road signs" down to the danube, there is even the same naming of the River of Innsbruck...Sill River on this stones and in the Veneto plains through Treviso to the Venetian lagoon its called Sile , but SIL in venetian.
4 - the majority of Noricum was infested with illyrians from 1000BC
5 - As per the book I linked on the other post, it states the Celtic homeland was the modern border of france and germany "alsace and east of there"
What we need to realise is that the Hallstatt culture came after into Noricum by the celts who where not germanic. With this I present a theory on U106.
Why would't U106 be Illyrian from Noricum that once these men where incorporated into the Roman armies, where based ( as history knows) in the netherlands building barges and boats to transport these Roman troops to English soil.
Then again- a mix of celtic and illyrian in Noricum could have "formed" U106 and also be sent to Netherlands