They will definitely want references for the full three years. At least two references is basically mandatory for the NHS.
You’ll probably find out fairly quickly if you’re being offered the job, sometimes the same day, but if not within a week, I’d imagine.
Can’t really help on the scoring as never done a band two interview. I’m a band 7 nurse and have had lots of NHS Interviews, so I’m sure there will be some common ground in the interview styles/format.
You’ll most likely be asked some scenario questions, like “if this situation occurred, how would you handle it?”, so maybe a disgruntled patient one, a difficult member of staff or maybe one about how you’d manage two competing demands on your time, sometimes an “in tray exercise” or one designed to assess your understanding of GDPR and IG, perhaps something along the lines of a patients relative calls chasing recent test results, will you give them the information? type scenario.
Then there will be some questions about experiences you’ve had in previous employment, perhaps a time when you’ve solved a problem or implemented a process change?
Make sure you come up with some questions to ask them too, so that you’re demonstrating to them that you’ve considered the reality/practicalities of doing the job and how it will suit you and your life, etc.