I am planning to travel from Amsterdam to Shanghai via Moscow on May 16. Unfortunately I need to do an electronic bonus test for university (via the internet) on that day between 18:30 and 20:30 (Central European Time).

After looking for all flights between Europe and Shanghai I have found the following flights:
Amsterdam-Moscow 11:45-17:00 operated by KLM
Moscow-Shanghai 21:30-10:10 operated by Aeroflot

I will fly both legs in business class, so I will have access to the lounge.

Here come my questions:
1. Are the terminals I will arrive/depart from connected or is a train/... required?

2. How long before boarding do I have to come to the gate?

3. How long does it take to get from the Aeroflot business class lounge to the gate of the Shanghai flight?

4. Does the Aeroflot business class lounge have a reliable Wifi connection?

Please help me!