Can you connect multiple instances of Jira into one plan?

[Daniel Chaplin]

My company has 2 instances of Jira that support different parts of the organization (one for IT and one for R&D) with their own workflows. I want to create a unified roadmap across both of those instances so I can report out to the rest of the organization. Is that possible with Advanced Planning?

[yqiao]

Hey as far as I know, the roadmap does not support connecting multiple sites into a single unified plan. Roadmap is designed to aggregate and visualise work from multiple projects, boards, and teams—but only within a single Jira instance (site).

A possible workaround could be using some 3rd party tools, just did a quick search and here are the results:

1. https://marketplace.atlassian.com/apps/1215199/backbone-work-sync-for-jira-two-way-issue-sync?hosting=cloud&tab=overview 
2. https://unito.io/