stockdale, It doesn't matter if they have a "cast iron" case or not, any appeal will set things back several months. A suitor might try their hand to get AST at a cheaper price.
So there's only one suitor left. Almost certainly INA. INA could pump Croatian gas into the Slovenian network using LEG's pipework. At a later stage LEG's gas could be added once they've got the IPPC.
"When interests in shares carrying 10% or more of the voting rights of a class have been acquired by an offeror (i.e. a bidder) in the offer period and the previous 12 months, the offer must include a cash alternative for all shareholders of that class at the highest price paid by the offeror in that period."
It is not the highest price in the last twelve months.