Sticky situation with job search...the Street is a SMALL WORLD

Hi guys, for context, I work at a very small 3 man "ECM" shop (really just two stockbroker/private wealth guys running around trying to raise a couple million $ for microcaps) in Australia. The scene is VERY small, especially here in Australia...my two bosses come from a stockbroking background and have worked/know guys at the mid-market brokers (e.g. Ord Minnett, Bell Potter, ELC Baillieu, Canaccord, Morgans, Wilsons, Shaw and Partners, Evans and Partners, etc.).

I have wanted to transition to equity research at a mid-market broker, so have reached out to my own network. One of the guys in my network kindly connected me with a senior research analyst (call him ABC) at one of these brokers. We had a coffee chat about two-three weeks ago and got to know each other, no role was on offer but he is keen to keep in contact and learn more about my work product/work style before trying to pitch his boss to hire me (he does need help as his associate left, but deal activity in his sector is down so the firm is not actively recruiting at this time).

Fast forward to today, my boss is good friends with a research analyst (call him XYZ) who happens to be a colleague of ABC (same firm, same title/rank). My boss is trying to organise some sort of 'hybrid role' where I would work part time with XYZ when deal flow is weak and then back with my current firm when they need me -- whole process is weird to be honest and I don't like it personally, but basically they are having cash flow problems with my wages and need XYZ/XYZ's firm to share that load when I go work for them. XYZ and I will be meeting later this week in ABC/XYZ's office, where I will probably bump into ABC.

So my question is, should I message ABC to let him know that my boss has put me in touch with XYZ and that I might run into him in the office? Or should I keep hush about it and let the cards fall as they may?

My logic is that regardless of whether I mention it to ABC, both these guys will eventually learn from each other that I am looking to leave my current firm and do research full time, which will probably make it's way back to my boss, so that part seems near inevitable. I personally think I should tell ABC because I don't want any blowback to the guy from my network who introduced me initially to ABC, which seems to be the only thing I can control/avoid now.

Keen to hear if anyone has been in this situation, and how to navigate it.