I have a requirement to send messages from LWC component to an Aura component. The component exist on the page independently, i.e LWC is not embedded in an aura component. The components are in a lightning community and the aura component is a part of page header and lwc component is placed in one of the detail page.
Is it possible through pubsub?
Note : I'm aware that the lightning message service is going to come in future release.