This was not my point.
a) EL uses 'legacy DR' - not DR15 or DR30
b) If you have two singles, rather than a return, the value of your DR claim is substantially reduced (ie. halved)
c) There are disputes about whether, with contactless, you can claim for a journey you intended to make but didn't tap in for at the time (due to the delay) - see recent threads on this topic (not involving TfL)
A) Why is the Elizabeth Line relevant? The fact TfL doesn’t want to pay out as easily on their rail services doesn’t mean other operators won’t
B) fortunately delays of over two hours where you would get both legs of the return repaid are rare on commuter services, but yes they should address this really
C) this feels the bigger issue. Of course if you abandon your journey without tapping in you haven’t spent anything so it’s broadly good, excluding those two hour delays as above. But what if you leave to avoid the delay and come back in an hours time then tap in to catch a train, will there be arguments.
But then if there delays and I have my normal anytime day return I often don’t scan the barcode until I’m about to board either, the only difference is I bought the ticket in the morning.