Simplest nRF53 dual-core ESB communication?

[ace.johnny]

I want to receive a few bytes over ESB on the NET core, and then forward those values to the APP core to dim a few PWM LEDs.

I thought this would be a good basic beginner's project to apply several previously learned concepts and integrate them into cohesive working code, but I'm already staring down a warren of rabbit holes so deep and blitheringly complicated that I just want to crawl back in bed.

I can dim PWM LEDs on the APP core. Easy.

I can receive bytes over ESB on the NET core. Solved.

But now I face the daunting task of not only choosing one of several bewildering and competing inter-core communication protocols, but also deciphering how to compile and flash multiple CPU images using the staggering Sysbuild, and once again the exhausting learning curve in front of me seems many more distant moons away.

Can Nordic please define the simplest path forward, so that I'll fail miserably in just a few weeks this time, instead of the typical months it usually takes me to accomplish nothing?

Just a few bytes, in one direction, from NET to APP.

[AMarch01]

I was going through the ipc_service example to attempt to help you out because your candor suggested kindred spirt. It wasn't working for me, so I decided to "edgemecate" myself on sysbuild to figure out why the example wasn't working... then attempting to run through devacadamy to get a clue on sysbuild ... 
Finally realized I was at work and this wasn't a priority for me ... but ...you know the saying "the thought that counts?" or in my case the road to hell is paved with good intentions. 

Glad you learned something and thanks for your description. I hope you can move forward from here.
A M