closing chequing account (cibc)

I'm leaving Canada this month and won't find out if I will return or not until February.
Fortunately TD allows me to close all related accounts with them online while CIBC requires me to do it in person.

CIBC has been my primary bank and my oldest credit card is also with CIBC. I heard that closing your old credit card is usually a bad idea since you want to keep your credit history open.

I was wondering if closing my chequing/savings account with CIBC will also impact my credit history?