Ship was never going at 34 kts, 22 is max.
It was doing a little over 8 kts when it lost power. It bled off about 1 kt in the 4 minutes it was "coasting". The anchor chain is clearly visible in the picture of the ship wedged under the bridge.
We don't know exactly when it was released, only that the order was given 2 minutes before the collision. They station crew on the bow for that purpose when they have no tug escort, so it would not have been a long delay, but who can say precisely...
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