Do a pre-filter of lessons to only have those that might depend on channel
Do a pre-filter of lessons to only have those that might depend on channel

learningequality/kolibri,lyw07/kolibri,mrpau/kolibri,lyw07/kolibri,mrpau/kolibri,mrpau/kolibri,mrpau/kolibri,indirectlylit/kolibri,lyw07/kolibri,learningequality/kolibri,indirectlylit/kolibri,learningequality/kolibri,indirectlylit/kolibri,lyw07/kolibri,indirectlylit/kolibri,learningequality/kolibri