Hi everyone, seeking some advice here for SB hiring process.

End Nov: had Second interview
Next day: HR immediately said they are pleased to move on to next stage of process and asked for references, pay slips, bonus, benefits evidence etc
End of first week Dec: both my referees responded and HR confirmed references received
15/12/23: sent email to HR to ask for update. HR auto reply was away till 20 Dec

Till now no update from HR since he’s back on 20/12. How long do we usually need to wait before HR responds with an official contract after references are given? Or is there a chance a contract may not come by even if references are checked?

Thank you