According to the search results, there is no Notre Dame game scheduled for today, October 21, 2023. The most recent Notre Dame game mentioned in the search results was on October 14, 2023, against USC, which aired on NBC and could be streamed on Peacock and Fubo. The next Notre Dame game mentioned in the search results is on October 28, 2023, against Pittsburgh, which will air on NBC at 3:30 pm ET.