There is a test program for travelers entering Alberta via the Calgary Airport or through the Coutts border crossing that started on November 2. Under the test program, travelers get a covid test upon entry into Alberta, followed by a quarantine period that ends if the test result is negative. A repeat covid test is done at 6 or 7 days after entry into Alberta. I actually talked to the border people at Coutts today and they reported that the result is typically available within 48 hours, which is why I assume Holloway was under the impression that he would only have a 48 hour quarantine.
I'm wondering if he either tested positive, or if Team Canada is enforcing their own quarantine restrictions.