@Stiofain
The following post was in an unrelated thread (about pubs showing rugby) but it might help. Good luck!
Not sure about Friedrichshafen but there's an Irish pub in Constance who a friend of mine used to take the ferry to from St Gallen to watch GAA matches so surely they'd be showing the rugby here's the details - maybe give them a ring
Shamrock Irish Pub
Bahnhofstr. 4
78462 Konstanz
07531/24622
Don't know if the Mr. Pickwicks is still open in St. Gallen
There was an irish pub in Lindau never was there so no idea of telly there try it out though
Mike's Irish Pub - more info »
In der Grub 34, 88131 Lindau
08382/6969