EDIT: Whoops – my bad. My brain automatically translated “SPDIF” to “ADAT”! ADAT yes, SPDIF no.
Yes you can.
Key things to consider:
Which machine is sync master? In current beta version of Push FW you can choose this in settings menu; in most up to date release version you need to set through software on your computer. See the Push 3 audio interfaces thread for more info.