Need help with nRF24L01 and Arduino decoding and receiving
On the nRF24L01 the communication is performed through "pipes", each with an address. That is unique to those chips and you cannot assume that some other random chip will do the same thing. As a general rule the nRF24L01 chips will only communicate with other nRF24L01 chips. You will need a SDR and an in-depth understanding of the workings of your current transmitter and it's communication scheme to even begin to think about doing what you want.

So... Go plan B.