Coming back through Lille today, really? (2,4)
I believe the answer is:
do tell
'coming back through lille today really?' is the definition.
I can't tell whether this defines the answer.
'back through lille today really?' is the wordplay.
'back' shows that the letters should be reversed in order.
'through' indicates the answer is hidden within the clue.
'lletod' is hidden within 'lille today really'.
'lletod' in reverse letter order is 'DO TELL'.
Can you help me to learn more?
(Another definition for do tell that I've seen is " pray, continue".)