I don’t know if this well help or not for folks. But, I applied for this last time the job was posted. There was no AI chats or single video interview then.
You done three online tests, if you were succesful, you were immediately invited to the next stage. Passing all 3 tests led to the video interview.
Last time my friend failed the third test, the comprehension test and was emailed straight away to say unsuccessful. Unfortunately, we don’t know anyone that’s gotten to this stage and had email stating unsuccessful.
This is pure speculative on my part. But, they could possibly be waiting till more people have applied/tested and like the recent xc recruitment drive as a prescreening filter will only take those with higher scores to the next stage. Am basing this purely off the LNER website saying theirs three online tests and comparing this with my experience last time and this time