Is this pace normal for a potential marriage match?

As-salamu alaykum - I wanted to share and get a man's perspective. My brother reached out to a stranger on my behalf a few weeks ago. We've exchanged some basic details (I ended up sending more than he did - maybe because he assumes since I was introduced I know more). He agreed to take things forward and have a call with my mahram, but communication has been pretty slow. There are different time zones, and he keeps apologising because he’s been travelling and visiting unwell relatives. He did give my mahram his personal number instead of continuing on the original app, so that felt like a positive step. I want to give him grace - he’s on the younger side and maybe wasn’t actively looking for marriage - but he also hasn’t closed the door. He doesn’t show much initiative: even after apologising and explaining the delays, it doesn’t scream high interest to me. That said, I’m a stranger to him, so I get it, and I’m actually a bit surprised he’s given real reasons rather than being blasé. I really pray we move to the proper talking stage soon so he can get to know more about me and how I look, all in a halal manner of course. I wonder if he’s hesitant to speak with my mahram and would prefer to speak to me directly - maybe he sees involving the girl’s family as a serious step he’s not ready for. Would it be wise for my mahram to say something like, “I’m comfortable with you two talking directly; I’m not completely out of the picture,” or would that come across as desperate or bypassing proper adab? I’m trying to understand, from a man’s perspective, why there’s a delay even though he told us recently that he’s still interested. He’s also updated his online presence to look more professional, which I take as a good sign - hopefully not just coincidence! He seems respectable, traditional and religious; it doesn’t feel like he’s playing me or being inappropriate. I pray to Allah that He writes this man for me. Ameen.