suspect BA will wait until they know the Xmas period cant be hit and will then go all in to end it.
which is pretty soon.
Assuming that Unite allowed BASSA to issue a ballot tomorrow, the ballot would close in 4 weeks, i.e. 15th December.
One week prior notice would then have to be given, which makes 22nd December the earliest it could happen (ignoring lack of protected status etc for the moment).
So BASSA have only three days to convince unite to ballot to hit xmas day by my math.