Match centre includes activity in real time (9)
I believe the answer is:
correlate
'match' is the definition.
(correlating is a kind of matching)
'centre includes activity in real time' is the wordplay.
I cannot quite see how this works, but
an anagram of 'real' is 'rela' which is within the answer.
'time' could be 't' (abbreviation) and 't' is found in the answer.
'centre' could be 'core' (core can mean something's centre) and 'core' is located in the leftover letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for correlate that I've seen before include "Establish a mutual relationship between (things)" , "Make a connection between (things)" , "Match" , "Bring (things) into correspondence" , "(Of two things) tally" .)