Like kendifu and Steele said, channels refers to when the product is moved from producer to consumer, directly or indirectly transfer the ownership of the path
As Kendi Fu and Steele said, the channel means that when the product moves from the producer to the consumer, directly or indirectly, through transfer of ownership of the path
As Cundiff and Steele have said, the channel is the path through which the direct or indirect transfer of ownership occurs when the product moves from the producer to the consumer.