score:2
Always refer to Timatic, the database used by airlines, about these things:
Visa required, except for those who are in direct (Air to Air or Air to Sea) transit if holding confirmed onward bookings, continuing their journey within 48 hours and not leaving the transit lounge.
So no, you do not need a visa
Upvote:0
No. Not needed.
The Hong Kong station has an MRT-like underground train service which the passengers can use for commuting from one terminal to another.
The officers in the stations are also very helpful. They would look at your boarding passes and would tell you which station you need to get down at.
Thus, one doesn't need to cross over the airside. So, the transit visa is not required in this case. [Timatic is perfectly right, as the accepted answer quotes.]