I guess you will have to find a balance between easy development of the Elephant and Rhino, and having the Pawns protected. If the Rhino can immediately develop to a square between the Pawns, it will fork 2 Pawns. So these must then not both be unprotected.
Perhaps the Rhino is too dangerous to allow quick development, and must just be used to protect its own Pawns.
I guess you will have to find a balance between easy development of the Elephant and Rhino, and having the Pawns protected. If the Rhino can immediately develop to a square between the Pawns, it will fork 2 Pawns. So these must then not both be unprotected.
Perhaps the Rhino is too dangerous to allow quick development, and must just be used to protect its own Pawns.