We do not “perceive” the phenomenal world, we constitute/project it intersubjectively united by a particular nexus of universal transcendental intersubjectivity. There are other nexuses and their intersubjectively constituted/projected phenomenal worlds, and we can communicate with them.
https://misharogov.medium.com/what-dmt-induced-experiences-teach-us-philosophically-f9ee7f5c6929