u/NxOKAG03

I just had an interview for a teller position on Friday. It was both qualifications and behavioural in one interview so I'm pretty sure I don't have any other interviews to pass. I asked and they said they would confirm within a week if they were offering me the position. But the impatience is gnawing at me and I'm wondering what the timeline is like if they offer you a position? I heard they do lengthy background checks, is this also the case for bank teller positions? If I get an offer how long do I have to wait in general to start? A week? few weeks? a month?