Yes, your systems can communicate to RAIN with RAIN’s Memory, It means that RAIN can know all information of your system, vice versa.
And unity NavMesh can be used by RAIN, too.
You need to inherit BasicMotor and then override bool IsAt() and Move() two function by youself, I have already succeeded for this.
I can’t pass my code to you because we are a company; however, all thing you need to know is in above.
Best Regards.