I'm afraid the only way this happens is if a single player controls the whole stack that requires coordination. For example, Google can automatically set a remi

I'm afraid the only way this happens is if a single player controls the whole stack that requires coordination. For example, Google can automatically set a reminder in your calendar about needing to go to work because it knows when you go where through their navigation app. Getting those two to communicate/agree on a common language in that way when you do not control both apps is far harder.