Thank you all for your answers!
I'm not a programmer, the best I can do is to try to implement the software others created, sorry.
But it would be very nice to have a controller and both radio on a single Rpi.
If I'm not wrong, the RPi having 2 SPI chip enable, has the possibility to control those two radio. So it shold be just a software question, not a hardware one, isn't it?

Hello, I'm new to this forum.
Is it possible to have both radio active at the same time on a RPi gateway? Why did you choose to have just one at a time?
Thank you,
Andrea