Hi u 2
goood question
the tricky question is if it is a half-hex or a full hex!
if it is a full hex IMHO you can use Bypass on all six hexsides
if it is a half hex IMHO you cannot use Bypass along the board edge, because it does not constitute a hexside
you can use Bypass along "normal" hexsides of half hexes
NRBH - but i think in the Glossary of the ASLRB there are definitions what exactly a hexside is