I purchased destiny the collection and I'm also a owner of the taken king collectors edition and I never received the items I was promised from anything, I got 1 lvl 40 spark of light for the taken king and nothing else, I'm aware I was supposed to receive two sparks of light(1 from taken king[which I did use this one], 1 from collection), 1 subclass infusion and telementries and I only ever received 1 spark of light which I used on my warlock, but I still didnt get crap for puchaceing the collection for $50 even though I already own the taken king collectors edition
The Taken King provided a level 25 spark of light, once per account. Note - purchasing TTK a second time (I.e. Initially purchasing TTK CE, then purchasing Destiny the Collection) does not provide this spark a second time. Rise of Iron provides a level 40 spark, again once per account. Subclass boots and items such as telemetries are part of the separately purchased class packs, and are not included with the spark of light included with TTK or RoI.