Push notifications don't signal an active line of communication like that though nor do they connect who's talking, only the means. In all your examples the eq

Push notifications don't signal an active line of communication like that though nor do they connect who's talking, only the means. In all your examples the equivalent would be "They know someone called you." "They know you got a push from McDonalds at 11am" "They know you got a Slack message at 2pm" All metadata is not created equal.