गोविन्द भाष्य (श्रील बलदेव विद्याभूषण - अचिन्त्यभेदाभेद वेदान्त ब्रह्मसूत्र भाष्य सटीक)

same way the Supreme Personality of Godhead may be said to be "in" the spiritual
world or "on" it. There is no real difference.
Adhikaraṇa 11
The Word "Prāṇa" Refers to Brahman

1. Viṣaya (Statement): In the Kauṣītakī Brāhmaṇa, Pratardana, the son of
   Mahārāja Divodasa, was able, by virtue of His chivalry and heroism, to enter the
   favorite residence of Mahārāja Indra. When Indra granted Pratardana a
   benediction, and Pratardana requested Indra choose the benediction he was to
   give, Indra instructed Pratardana in the following words:
   prāṇo 'smi prajñātmā taṁ mām āyur-amṛtam upasasva
   "I am prāṇa. An intelligent person will worship me as the great immortal
   person."
2. Saṁśaya (doubt): Who is this person named prāṇa? Is he an individual spirit
   soul, or is He the Supreme Personality of Godhead who resides in everyone's heart
   as the Supersoul?
3. Pūrvapakṣa (the opposing argument): The words "indra" and prāṇa here refer
   to a specific individual spirit soul. When pratardana inquired, Indra replied by
   saying the worship of Indra was the most beneficial activity for the living entities.
4. Siddhānta (conclusion): Śrīla Vyāsadeva responds to this argument in the
   following sūtra.
   Sūtra 28
   prāṇas tathānugamāt
   prāṇaḥ—the word prāṇa; tathā—in the same way; anugamāt—because of the
   context.
   The word "prāṇa" (should be understood to refer to Brahman) because of the
   context of it's use.
   Purport by Śrīla Baladeva Vidyābhūṣaṇa