ADS131A04: How to get data in synchronous slave mode

Part Number:ADS131A04

Hi Team,

ADS131A04 is used in synchronous slave mode, now if we follow the timing sequence shown in the picture below, the data should be read out through master MCU, is it correct?

Another question：

Is it possible to get the 4 channel data by sending command? For  example, /CS is pulled low, and then "NULL" command is send, will we get 4 channel data in this way?

Thanks and Best Regards!

Hao