[nine_k]

Can the tabs share a background worker that would handle that?

[merb]

You can use https://www.npmjs.com/package/broadcast-channel which creates a tab leader, no need for a background worker

Edit: of course you could use: https://caniuse.com/sharedworkers but android does not support it. We migrated to the lib because safari took its time… so mobile was/is not a thing for us

[nchmy]

Here's the chrome android issue for Shared Workers. Add your voice if it is something you need

https://issues.chromium.org/issues/40290702