Originally Posted by
wto605
Unfortunately the agent is correct, since UA operates other LAX-EWRs flights between your two flights (and it is therefor possible to hav ea connection <=4 hours) you have booked two one-ways. Whether this ended up being fared as open jaw, stopover, or just a basic multi-city is irrelevant... you will need two instruments.
That is not correct. The availability of earlier flights does not magically convert a connection to a stopover.
OP, hang up and call again.