When submitting an idea through Salesforce, we get three notifications to slack via our Aha integration for each part (vote, link to salesforce, and organization relation) compared to a merging of them to a single message, reducing noise to the channel we feed idea submissions to.
We recently improved how notifications are sent from Aha! to Slack. This issue was specifically addressed.
https://www.aha.io/blog/share-product-updates-with-the-newest-aha-to-slack-integration