Use your transcription tool within your sales call, instead of the full summary, you can also get more juicy specific detail out using Claude (my llm choice).
Stick that into a custom field 'Sales Call convo' - if they don't buy or take action.
Add that into your context injections for future follow ups.
I've just started doing this now and had 2 people re-book this week who did not buy prior.
Checked the messages and my forever follow-up was hounding way more accurately.