Hardware Linkplay via PocketGB Emulation on GBA SP?

[KillerMiller]

I have two GBA SP,s but only 1 Tetris & 1 Dr. Mario (booth GB Classic).

My question now is:

Is it possible to play Classic GB games over 2 GBA SP,s trough Link Cable?
Is that even supported?
If yes, it it possible to let 1 game run over emulation via PocketGB and the other one is the original module?
Or is it possible anyway to have a Link play via PocketGB?

I actually tried it with PocketGB but it doesnt seem to work?