A Challenge to Network Guru

ituation

Branch A
Internet Connection: PLDT DSL

Branch B
Internet Connection: Bayantel DSL

Branch C
Internet Connection: N/A

Connect Branch A and B thru VPN using DSL and Use Fail Safe Connection thru wireless.

Problem: Since Branch A and B are connected wireless when Branch A experience an internet interruption it will get its Internet Connection from Branch B and Vice Versa.

Question: Is it possible to use a load balancer to add the internet connection from Branch A to B using wireless and Vice Versa.

Note. Branch C will get its Internet Connection from Branch A. It will only act as extension of Branch A

That would require rediculous network rigging. Load balancing connections at the same site is hard enough, adding different sites to the equation would make it insane. I dont think it would be a good cost/benifit ratio. The money used to try and make it work could be used to just get a faster connection.