Neither story gives me much confidence in a quick response. The time interval between ATC reporting an aircraft missing, and the message being passed to the rescue services, mentioned in the AAIB report into the Pa28 crash in Loch Fyne was also long.
Living on the coast, I see lifeboats and Coastguard helicopter and ground team responses to "false alarm with good intent", and am impressed by their speed.
The Coastguard helicopter has just left after practicing sea cliff rescue within earshot of my livingroom, ~40 NM from it's base. If the seaplane mentioned had crashed, survival in Norwegian water after 45+ minutes would be less likely. Why not respond in lieu of practice?