One of my iphone accounts listed in the calendar does not give option to sync calendar
I have an Iphone 13 which has two accounts, my icloud account and comcast. For the comcast account in the calendar section it only gives two options, mail and notes but for the icloud account it provides for iCloud Drive, Contacts, Calendars. My comcast calendar does not show in the calendar app. How can I get it to show in my iphone calendar?
Thanks in advance for your help and interest.
MAC