I remember decades ago three channels showing parades on Thanksgiving morning.
NBC national network had the Macy’s parade.
ABC affiliate in Philadelphia had the Gimbel’s parade. It changed sponsorship a few times and I believe it’s now the Boscov’s parade.
CBS national had bits of parades from New York, Philadelphia, Detroit, Toronto, and Hawaii.
Toronto’s parade was a “Holiday” parade, not US Thanksgiving and I think it was taped from the previous weekend, not live.
Hawaii’s parade was also pre-recorded,
I didn’t realize that Detroit still had a parade since Hudson’s downtown closed long ago.