dimensions, interconnections

"Why did you inquire which Brahma had come see You? What is the purpose of such an inquiry? Is there any other Brahma besides me within this universe?"
Upon hearing this, Sri Krsna smiled and immediately meditated. Unlimited Brahmas arrived instantly. These Brahmas had different numbers of heads. Some had ten heads, some twenty, some a hundred, some a thousand, some ten thousand, some a hundred thousand, some ten million, and others a hundred million. No one can count the number of faces they had.
There also arrived many Lord Sivas with various heads numbering one hundred thousand and ten million. Many Indras also arrived, and they had hundreds of thousands of eyes all over their bodies.
When the four-headed Brahma of this universe saw all these opulences of Krsna, he became very bewildered and considered himself a rabbit among many elephants.
All the Brahmas who came to see Krsna offered their respects at His lotus feet, and when they did this, their helmets touched His lotus feet. No one can estimate the inconceivable potency of Krsna. All the Brahmas who were there were resting in the one body of Krsna. When all the helmets struck together at Krsna's lotus feet, there was a tumultuous sound. It appeared that the helmets themselves were offering prayers unto Krsna's lotus feet.
With folded hands, all the Brahmas and Sivas began to offer prayers unto Lord Krsna, saying, "O Lord, You have shown me a great favor. I have been able to see Your lotus feet."
Each of them then said, "It is my great fortune, Lord, that You have called me, thinking of me as Your servant. Now let me know what Your order is so that I may carry it on my heads."
Lord Krsna replied, "Since I wanted to see all of you together, I have called all of you here. All of you should be happy. Is there any fear of the demons?"
They replied, "By Your mercy, we are victorious everywhere. Whatever burden there was upon the earth You have taken away by descending on that planet."
This is the proof of Dvaraka's opulence: all the Brahmas thought, "Krsna is now staying in my jurisdiction." Thus the opulence of Dvaraka was perceived by each and every one of them. Although they were all assembled together, no one could see anyone but himself.
Lord Krsna then bade farewell to all the Brahmas there, and after offering their obeisances, they all returned to their respective homes [CC ML 21.65-80].    (More...)