<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by pinniped:
Why would you do this</font>
As you said, maybe to check luggage straight through or to fool an agent into thinking you bought an interline ticket if you missed the connecting flight.
As pitz wrote:
"If its all booked on the same stock, then the airline is obliged to protect you on a later flight."
It probably wouldn't work though.