This is clear why Qantas management is keen to make the deal happens "Senior Qantas management is looking at up to $200million in pay rises and bonuses if the deal goes through." - SMH, Sunday 6th May 2007.
Regarding the fall in Qantas share price when the deal flops - this is expected, however the loss is only realised (crystallised) when the shares are sold (like all shares - remember when BHP share prices were around $12 years ago).
Regarding the fall in Qantas share price when the deal flops - this is expected, however the loss is only realised (crystallised) when the shares are sold (like all shares - remember when BHP share prices were around $12 years ago).