Spell Synthesis question for Mystic Theurge

[xaviorbat]

A friend of mine is running a game and I'm planning on going for the prestige of Mystic Theurge... but we have a question regarding Spell Synthesis, it says it requires the spells to have the same action time, but can one use metamagic feats to alter casting time to a complish this? aka could one quicken a full round spell to combine it with a standard action spell?

[Aldin]

It almost has to be "yes". Consider the alternative - casting a standard action spell synthesized with a quickened spell - how long does it take? I think the restriction is intended to make sure they take the same amount of time to implement.