Can you connect two different bluetooth modules at the same time?

I am planning to make the arduino use a bluetooth 2.0 module and a bluetooth 4.0 module at the same time, is that possible? I want the final user to decide which one to connect depending on their phone capabilities.

Thanks for you opinion

PaulMax:
I am planning to make the arduino use a bluetooth 2.0 module and a bluetooth 4.0 module at the same time, is that possible? I want the final user to decide which one to connect depending on their phone capabilities.

Thanks for you opinion

Why do think it requires two bluetooth modules?

" Bluetooth 4.0 is backward-compatible with all other versions of Bluetooth,"

Paul