Elizabeth II and the Gold State Coach in procession to Buckingham Palace after coronation

The transcript describes a grand procession involving Her Majesty, starting with the entrance into a park and moving through various streets such as Oxford Street, Regent Street, and Piccadilly Circus. The streets were crowded with enthusiastic spectators. The procession eventually returns through Admiral Yard, completing a journey that began hours earlier.

How did the people in Piccadilly Circus experience the procession?

What was significant about the state coach's journey through Admiral Yard?