Oxford biochemistry interview?

Hi I’ve applied for biochemistry at Oxford and heard back about my first interview last week, however I’m aware that for biochemistry you are interviewed by two colleges and have yet to receive any communication from a second college regarding time, date, or even what college my interview will be with. I’m very aware that interviews start next week so am slightly concerned that I should have heard something by now. Has anybody else had any experience with this or a similar situation? Thank you