Can you give me some more information to better understand your application?
If you want to minimize resource use, the 2 products can share, for voltages between 2.16V and 3.6V, the lines of VDD, VDDIO, GND, and SPI.
Obviously they cannot share the CS.
In order to give better visibility on the answered topics, please click on 'Accept as Solution' on the reply which solved your issue or answered your question.