When you add an email subdomain and select AUTOCONFIGURE, what is set up in (in my case) Cloudflare, is different to what's recommended in GHL. Further, when reading the support article (https://help.leadconnectorhq.com/support/solutions/articles/155000002223-how-to-add-a-domain-and-verify-dns-record), it says TTL records should be set to 5 minutes, though Cloudflare uses both 10 mins and 1 hour depending on the setting.

This is confusing as there's nothing listed as to the impact of this auto-configuration in Cloudflare that differs from what's recommended by GHL.