Is there a way to show a calendar for one Exchange account in another Exchange account?

It’s complicated but I now work with two different organisations and have two email accounts. They are both Exchange. I want the meetings I have set up in one account to show up in the calendar of the other. This is so that colleagues can view my calendar and know where I am. I have invited the other email to each meeting but this seems clunky. And I get two reminders. I can’t find anything googling it. Any suggestions?