I feel like you don't even need to add an extra feature for this (like an interface for adjusting delay), but rather just keep the entire "NotLikeThis"-screen length as part of the VOD. At least this would be a quick fix until something better exists. It feels like the reason for the VOD chat delay is because the "NotLikeThis"-screen length is edited down while chat is not.
I feel like you don't even need to add an extra feature for this (like an interface for adjusting delay), but rather just keep the entire "NotLikeThis"-screen length as part of the VOD. At least this would be a quick fix until something better exists. It feels like the reason for the VOD chat delay is because the "NotLikeThis"-screen length is edited down while chat is not.