Would they class it as 2 journeys though as it is 2 separate advance tickets. Even if you go via trainsplit or whatever, the tickets state separate journeys.
I did go through there and they found the cheaper price.
I don't think Trainsplit would say it is a 'separate journey' unless you add it as separate journeys.
If you buy each ticket individually on Trainsplit you would still be able to use the seat selector and the tickets are still valid as one journey. But what you wouldn't get is a through itinerary (you could generate and print one but it wouldn't be connected to the booking) and you wouldn't get their support in the event of any issues with the through journey, that would be down to you to contest it.
Essentially, it comes down to, do I pay the extra £8 for the security of less issues if something was to go wrong.
Paying the share of saving fee doesn't guarantee anything but it would make it a bit easier to demonstrate it is all one journey and likely secure additional support if you need it.
If you choose e-tickets, you'd get one PDF with all the tickets within the document (one ticket per page); if any train is re-timed it is easier to demonstrate it was a valid itinerary and it makes Delay Repay claims easier. In the unlikely event of a dispute with the TOC, if the TOC was not relenting I am sure Trainsplit would help you out if you booked it as a through journey with them. I am aware of them helping others. In the unlikely event of this happening, they have members of their team on this forum and I can contact them directly, so feel free to let me know.
I think the original poster of this thread would have been better off if they'd booked their journey as one journey:
Just a hypothetical question, both my outward and inward journey consist of two legs and use more than one ticket, so say 2 outward legs with 2 tickets and 2 inward legs with 2 tickets, all are advance purchased from multiple retailers. If only 1 of the 4 legs got cancelled, is condition 30.1 of...
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However the main consideration is to use the same retailer. If someone really doesn't want Trainsplit to get the share of saving fee, then my advice would be to put each ticket in their basket on Trainsplit and this avoids fees and at least gives Trainsplit some commission. Also e-tickets help the retailer to avoid incurring losses that occur with paper (TOD) tickets
They might even find a cheaper option for you!
Yes sometimes it comes out with things that would not otherwise be obvious! If it ever isn't the cheapest (which is quite rare), I'd encourage people to let them know (also send me a conversation message and I can make sure the right person hears about it) and they may be able to tweak their systems to find the cheapest combination in future.