Prabhupāda: Karma means sense gratification and bhakti-yoga means Kṛṣṇa's satisfaction.
Devotee: Well, karma-yoga...
Prabhupāda: Karma-yoga means just to dovetail your karma with yoga principles to arrive to the bhakti-yoga.
Devotee: To eventually arrive.
Prabhupāda: Yes. That is karma. That is not bhakti-yoga. But the aim is to arrive at the bhakti-yoga. Is it clear? That's all. Just try to understand in this way. It is very good.
Devotee (2): Is it the same thing with haṭha-yoga?
Prabhupāda: No, haṭha-yoga is not bhakti-yoga.