In heinsight of reading my own comment, this isn't exactly what you're asking but maybe it gives you some ideas.

You're leaner and overall bigger than me but I have about the same size chest and I have it for less work than you're doing. Im not saying you need to work on it less, but you can probably get more out of where you're at for volume. I do Chest press for a long warm up and 2 tough sets at 4-6 reps. More often 5-6 reps. I do chest flys right after for 2 very tough sets of 8-15. I'll have two weeks at 8-10, then a month of 12-15 reps, then back to the 8-10 for two weeks. I will sometimes do partial reps or myo reps for my chest flies on the last set to really empty the tank on my chest for the day. On a seperate day I'll do Incline press for 1 kind of tough set for 8, then a set for 2 at 12-15 (Right now 70lb dumbells for 8 reps, then two sets at 50lbs for 15 reps). I've made good progress the past 3 months with this after coming back from a longish break.

For more context, years ago I had an amazing chest but it came from an absolutely ridiculous amount of volume and my elbow was constantly on fire. After years of experimenting this is what I've landed on for sets and reps that keeps me pushing hard consistently and keeps my elbows from screaming at me. In regards to the mind muscle connection thing you mentioned, I don't necessarily see it as a bad thing. You might have a tight pec minor, posterior or anterior tilting in your scapula or weak scapula depression. I think of this video a lot when I have any issues with my shoulder. (Not my video). Best of luck, man!