No mention of Harper because Harper correctly deduced that this was not a kidnapping/hostage event worthy of any effort on behalf of the alleged "victims".

Just to review:

The apparently unfortunate Mr. Boyle, formerly married into Canada's first family of terrorism, suddenly "found" himself backpacking in Afghanistan.

He and his wife were then captured, allegedly.

Boyle then chose to father three kids, while allegedly in captivity.

Harper understood who or what an enemy of Canada was. Justin, the $10 million dollar award-man himself, does not.