WOIN OLD - Focus exploit with casting time longer than 1 action

[Cat in the Hat]

I'm wondering if you can use the Focus Exploit with spells that have a casting time of longer than 1 action. I can see arguments either way. what do people think? (and does Morrus have an official call?)

 

[Morrus]

No, because you don’t have the actions spare if it takes more than a round. Focus has to be used in the same round.