How to read two ADC simultaneously through SPI-AD7771

Hi AD team,
We have used the AD7771 in our design, We have a requirement to process 16 Analog single ended signal. We have used the SPI interface between the Processor and ADC.In the datasheet specified has only how to made synchronization between the multiple ADC's of same family but not specified about the interface to simultaneously process using the single SPI. Could you please guide me to proceed with the single SPI interface and How to get the two ADC data simultaneously. Looking forward to hear from you.

adding tags
[edited by: Lluis at 6:23 PM (GMT -4) on 23 Aug 2020]