Conveys swiftness of ageing via short meetings with potential romantic partners (5,6)
I believe the answer is:
speed dating
'ageing via short meetings with potential romantic partners' is the definition.
I can't judge whether this definition defines the answer.
'conveys swiftness' is the wordplay.
I cannot really understand how this works, but
'swiftness' could be 'speed' (synonyms) and 'speed' is found within the answer.
The remaining letters 'dating' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'of' acts as a link.
Can you help me to learn more?
(Other definitions for speed dating that I've seen before include "Quick modern way to find a partner?" , "Series of brief meetings" , "Quick way to meet a new partner?" , "Event where people can quickly size up potential partners" , "Series of person-to-person meetings" .)