BA Conn lost money while the parent company was at least managing to get by. BA parent had a choice to either close the company down along woth all the liabilities that entailed, or sell it for a nominal amount with a dowry for the buyer as a sweetener.
SAS the parent is in deep trouble and badly needs cash. Wideroe the subsidiary makes money.
Wideroe may well be sold but it will not be given away with a dowry. If Flybe want Wideroes they will have to pay either in cash or in some form of shares. Unless Flybe can find a bank willing to back them in a big way, Flybe will struggle to buy Wideroe in cash.