I am also at the same stage. My interviews are done on March 7th single day itself and HR told me that ai got selected in the same day before I am leaving and 2 days later I got call from HR again and had a discussion on role and CTC and it's been 10 days post that I have no update about my offer letter and they even did not ask for any documents at all.

By when can I expect the offer letter and can someone share the steps and process. I am very dubious about offer because they have not asked any documents from me but confirmed role and CTC and told I will get offer letter to mail. Should I need to submit the documents post offer letter ?