The union of the impersonalists and the union of the devotees are not on a par. The impersonalists try to fully stop their individuality by attaining sāyujya-mukti, or unification by merging into oneness, whereas the devotees keep their individuality to exchange feelings in relationship with the supreme individual Lord. Such reciprocation of feelings takes place in the transcendental Vaikuṇṭha planets, and therefore the liberation sought by the impersonalists is already achieved in devotional service. The devotees attain mukti automatically, while continuing the transcendental pleasure of maintaining individuality. As explained in the previous verse, the destination of the devotees is Vaikuṇṭha, or akuṇṭha-dhiṣṇya, the place where anxieties are completely eradicated. One should not mistake the destination of the devotees and that of the impersonalists to be one and the same. The destinations are distinctly different, and the transcendental pleasure derived by the devotee is also distinct from cin-mātra, or spiritual feelings alone.
Reference: – SB 3.5.47