Match

Hilton HHonors to Choice Privileges

After a quick email, they requested ID proof. Later on the day I got the status matched.

Challenge

Hilton HHonors to Wyndham Rewards

I send the email, they requested ID proof and 5 minutes later I was Platinum. With a challenge of course.

Other

National Emerald Club to Enterprise Plus

I called in and they said that the equivalent from Executive National is Silver Enterprise. Not sure about this.