Crossword Genius

Discuss sitcom, now and then, including its highest point (7)

Ross

I believe the answer is:

speakto

I'm a little stuck... Click here to teach me more about this clue!

'discuss sitcom now and then' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.

'its highest point' is the wordplay.
I cannot really see how this works, but
'highest' could be 'peak' (synonyms) and 'peak' is present in the answer.
'point' could be 's' (South) and 's' is located in the answer.
The remaining letters 'to' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...

'including' acts as a link.

Can you help me to learn more?

I've seen this clue in The Irish Times.
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