Short answer: yes!
Just follow the same steps for converting and you can turn your shared channel into a universal channel.
After you convert it into a universal channel, external contacts from Microsoft Teams and Webex will be able to send and receive messages that flow through your shared channel.
Can my clients use Slack Connect if they don't want to install the Mio app?
If your clients are Slack users and decide not to install Mio, you can have them join your organization's Slack workspace via Slack Connect and shared channels.
Once your clients are members of the Slack shared channel, you can use the Mio app on your organization's workspace to convert it into a universal channel.
Now that the shared channel is also a Mio universal channel, anyone from Microsoft Teams or Webex can join and chat with the clients who are Slack-only users.
Schedule a call with us so we can figure out way to enable external federation for your organization.