Real Amp Effects Loop Possible with Cortex Amp Block?

Hi there, I’ve always put time based effects in the effects loop of my real amps (if it had and effects loop). Is this possible with a 'Virtual" Amp in the Cortex, or can you only put these effects either before, or after, the virtual amp? I would like to be able to use my Fulltone Deja Vibe in an effects loop on the Cortex but placed in the effects loop of a virtual amp block - if that is possible? Many thanks.