The AI spew on self-connect describes it this way - In travel, a self-connect (or self-transfer) means you've booked two or more separate flights on different tickets to complete a journey, making you fully responsible for transferring between them. Unlike a traditional connecting flight, where the airline handles baggage and responsibilities for delays, a self-transfer requires you to collect your luggage, re-check it, and potentially go through security or immigration. This booking strategy offers more flexibility and can be cheaper but carries the significant risk of losing your next flight and having to purchase a new ticket if your first flight is delayed. 

Regarding my blog post in taking the long route to your final destination in the hope of saving on cost of your journey - the Independent has a piece in a similar vein.  Is it advisable to Self-Connect between flights It lays bare the risks envolved if you factor it in as part of the adventure.