Unfortunately no.

Although, with a character transfer it might be possible.
But that's not worth the cost for the limited gain.

If you really want to get levels on the other faction.
While you have RAF, just group a bunch together and run quests.
If you have a higher level to boost you in instances that's even better.

I would consider a character transfer, for a booster on the other faction.
Assuming you want teams on both sides.
But wouldn't transfer just to grant levels, and I'm not sure if that works anyway.