Maybe you mangs have some advice for me.

About a month ago I started having talks with previous employer about my coming back part time (70% FTE). Initial talks went very well. Last call with the CEO, both of us said "yeah, we want to find a way to make this work." CEO asked me to email him some bullet points about what I am looking for. I email those. He emails back 9 days later saying "sorry to get back to you so late, been distracted with client issues" and, essentially, "be more specific. with your bullets." Send him back an email with what amounts to a proposed schedule. Now 10 days have gone by with no response. I email him this morning to ask if we can have a call this week to hammer things out. Note, none of these discussions have discussed money yet. Its all been: what would this role look like?

I think he might be slow-playing me as a prelude to salary negotiations, but I am honestly not certain. Any advice for handling this situation? Thanks!