How do you know SDR activity made it into the CRM?

How do you know SDR activity actually made it into the CRM? The scenario I'm trying to understand: an SDR works an account in Outreach or Salesloft for two weeks, but the sync drops some calls and emails or logs them to the wrong record. In HubSpot or Salesforce the account looks untouched, so it gets reassigned or re-sequenced, and the meeting credit goes to the wrong person. I'm the founder of Dexraflow, researching how GTM stacks break between tools. Still validating, nothing to sell. 1. Do you audit activity sync, or find out when a rep complains? 2. Which tool pair breaks most for you? I'll share a summary of the answers back in this thread.