You can have up to 4 AnalogX on the same CAN bus. You just need to make sure each is set for a unique address.
For details on selecting the address see the section "CAN Base ID" on this page:
https://wiki.autosportlabs.com/AnalogX
Also note, the AnalogX has a CAN termination resistor across the CAN lines by default, you will likely need to remove some or all of these depending on your CAN bus. At most there should be two termination resistors on the CAN bus (one at each end of the bus is ideal).