I have a National Rail ticket with destination London Underground Zone 1-2. I'm arriving at Liverpool Street and my final destination is Greenwich, so that will probably require an out-of-station interchange at Canary Wharf from Elizabeth Line to DLR. Should I be worried about my paper ticket being retained by the fare gate when exiting the EL at Canary Wharf? I'm aware the DLR does not have fare gates so I wouldn't need the ticket to get on, but I still wouldn't want to travel without my ticket on me in case of an inspection.