i know i need a crossover cable - here's my question:

since one can easily take a regular straight through patch cable and
turn it into a crossover cable, can i take such a cable, coupler, and
crossover cable to do this?

in other words...plug straight through patch cable into uplink port on
router A, connect other end to coupler, other end of coupler to
crossover cable, then crossover cable into router B...will that work?