For one, as the former head of state, Her Majesty’s final sendoff was a state funeral.
In contrast, asWashington Postreported at the time, the late Princess Diana’s service was not.
As such, the queen’s funeral was on a much grander scale.

And why is it reminding royal watchers of Princess Diana’s funeral decades on?
Did they not learn anything?"
He also reminisced on it being, a “long and lonely walk.”

In that same interview, Harry mused, “I don’t think it would happen today.”
Whether they’ll appreciate having been included in the procession, only time will tell.
