can you RAF cross realm through realID?

Was wondering if you could assign levels to someone you are RAF linked with cross realm?

My main account is full on my home server, and I'm considering grabbing 2 fresh accounts (on a new bnet). I'd boost with my main account (C linked to B, B linked to A, where A is main). The boosting toons should be levelled on my main home realm, but I'd like to use the levels that can be granted on another realm.

The boosting process is no problem as that happens on the same server. But since I'll have 2 different bnet accounts, I will create a new level 1 toon on another realm on the main account, group cross realm up through realID with the toons that have been boosted, and then want the boosted toons to be able to grant levels to the new lvl 1 toon.

Anyone who has tried this?

You cannot.

Multibocks tried this a little while ago.
Even with a server transfer (of the toon granting the levels) this will fail.
There's basically no point in transferring a low level to receive granted levels, as you could just make one on the target realm and not pay for transfers.

cheers