“Hey it’s been forever, grab a coffee and share what we’re both working on and how we might help each other?”
"Hey, it's been forever, want to catch up over some food?"
If you end up hearing about a useful opportunity, or providing them with a useful opportunity, great. But you still got to catch up with a friend, and came across as that being the primary goal.
If you are looking for part-time work, it's fine to say that, and there's nothing wrong with reaching out to friends to find out if they know of good job opportunities. But "share what we're both working on and how we might help each other?". That comes across terribly.
Ultimately the only thing that matters is: you have a phrase that you can say comfortably and expresses genuine curiosity about the other person.
The go-getter networking ethos of founders and small business owners can be hard to distinguish from the way MLMs find and prey on people.
Aren't all those the same thing?
A different thing would be someone wanting to meet up only because they wanted to see you (not to nurture or harvest a resource).