I am looking at some flights that go to Europe on AA/BA. The route is SFO-LHR-CPH. I don't have much interest in going to CPH and I am trying to go to LHR for most of the trip, then continue on to CPH for a couple days, then fly home.

The fare rules say no stopovers though, so I want to double check that this means I cannot do what I planned, as I can't change my LHR to CPH flight for a week later, and need to make my connection in LHR as it is booked?

It does however say transfers are permitted. I am not sure what this means? Does anyone have any advice or tips, so I can do my LHR trip?

Here is what it says:

Category 8: Stopover restrictions

NO STOPOVERS PERMITTED.

Category 9: Transfer restrictions

2 TRANSFERS PERMITTED IN EACH DIRECTION FREE
2 FREE IN EUROPE IN EACH DIRECTION.
AND - 2 TRANSFERS PERMITTED IN EACH DIRECTION FREE
1 FREE BETWEEN AA/AY/BA/IB/US AND AS IN LAX/PDX/
SEA IN EACH DIRECTION
1 FREE BETWEEN AA/BA/IB/US AND AM IN MEXICO IN
EACH DIRECTION
1 FREE BETWEEN BA AND AC IN CANADA IN EACH
DIRECTION
1 FREE BETWEEN AA/BA/US AND WS IN CANADA IN EACH
DIRECTION
1 FREE BETWEEN AA/AY/BA/IB/US AND HA IN HAWAII
IN EACH DIRECTION
2 FREE BETWEEN AA/AY/BA/IB/US AND AA/AY/BA/IB IN
NORTH AMERICA IN EACH DIRECTION
FARE BREAK SURFACE SECTORS NOT PERMITTED AND
EMBEDDED SURFACE SECTORS PERMITTED ON THE FARE
COMPONENT.