Any body have more insight on question 1 and question 2?

Thank you for your contribution in advance.

Hi I am working with my current employer on T2 expiring in 2022. I found myself a new job which can sponsor me T2 as well (call skilled worker visa nowadays). I got some questions in my head and cant seem to find the answer anywhere, any help will be really appreciated. 1. Assuming the start date of...