No, because routers do not retransmit packets, only hosts. if you had something like earth -> sat -> sat -> mars and the equipment on mars is temporarily unr

No, because routers do not retransmit packets, only hosts. if you had something like earth -> sat -> sat -> mars and the equipment on mars is temporarily unreachable, you don't want to have to repeatedly retransmit earth -> sat -> sat since that takes between 4 and 24 minutes end-to-end. You want the data to store on the remote sat until it can be forwarded to mars.