With the first database I looked at overlap for (A), I was able to check each title in a comparative database, and then I checked the remaining titles in a second comparative database. With this second database (B), it quickly became apparent I would not be able to be this thorough. Database B has over 11,000 journal titles, making it too time consuming to possibly check each title, and then each remaining title a second time. Instead, I’ve had to start sampling titles and checking them in the first comparative database. Right now, I’m trying to sample every ~20 titles, but I might need to go wider.