Derek Draper spent more than a year in hospital after falling ill with the coronavirus.
The line-up for Thursday's show did not score highly with viewers.
Garraway's husband Derek Draper has been incapacitated since contracting Covid-19 in March 2020.
The 'GMB' presenter injured his knee playing a football match with his old class mates and has undergone surgery.
The presenter pointed out that Harry's comments came very soon after the death of Charles' father.