> Analysts concluded that 23 sailors survived the initial blasts and took refuge in the small ninth compartment at the rear of the submarine.
> Evidence suggests they remained alive for more than six hours. When oxygen grew scarce, they attempted to replace a potassium superoxide chemical oxygen cartridge, but it fell into the oily seawater pooling on the floor and exploded on contact.
> The resulting fire killed several crew members and triggered a flash fire that consumed what remained of the oxygen, asphyxiating the last survivors.
That does not suggest a possibility of a foreign rescue vessel making it there in time.
The survivors possibly had a change if Russia had accepted the offer for help from the Norwegian rescue divers right away.
From the article
> Analysts concluded that 23 sailors survived the initial blasts and took refuge in the small ninth compartment at the rear of the submarine.
> Evidence suggests they remained alive for more than six hours. When oxygen grew scarce, they attempted to replace a potassium superoxide chemical oxygen cartridge, but it fell into the oily seawater pooling on the floor and exploded on contact.
> The resulting fire killed several crew members and triggered a flash fire that consumed what remained of the oxygen, asphyxiating the last survivors.
That does not suggest a possibility of a foreign rescue vessel making it there in time.
Also:
"No search was launched for more than six hours."
"It ultimately took over 16 hours to locate the stricken vessel, which lay on the seabed at a depth of 108 meters (354 feet)."