Empress - the Canadian agent went out of her way to even explaining what you're doing is okay as long as you call back twice.

Airlines are not supposed to promote back-to-back ticketing and I am surprised the agent went as far as she did. Remember that calls might be monitored for "quality assurance" and that her job is on the line if she went to explain what a back to back ticket is so that you'd have ideas on how to save money instead of buying 2 normal full fare tickets.

Better speak to a travel agent whose call is not monitored! Better yet - since y ou already know all about back-to-back ticketing, just go ahead and do it.