Routing is an easy way to make two separate flows based on the conditions. Let's say you send a connection request and after that you waited for 2 days, then you want to check whether someone has accepted your request or not.
If connection request is accepted then you may want to send a message and if not you will wait for another 2 days. Since these are conditional flows and works only when certain criteria is matched. This can be done using routing.
See the attached image below.
Hope this helps.
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