Caster level Synchronization

[Avalon®]

Are there any ways to have a caster's arcane and divine caster levels to become the same level even if they're not theurged or something else?

This is for a gestalt character I'm building that's going Wizard X/Asstd. PrCs X//Divine Caster X/Asstd. PrCs Y where the progressions on each side is not equal to the other?

[sirpercival]

Take a look at the Theurgy feats from Dragon #325. These may be of some use to you.