Couiza Train Station
When you're ready, use your Harley to open the overhead valley map. Locate the Couiza train station hotspot and left click so Gabriel heads that way. Once you're at the train station, explore the immediate environment and locate the taxi and taxi driver to the left of the train station.

Talk with the taxi cab driver. Use your wallet if you must purchase information.

Approach the taxi driver and initiate conversation. It's important to talk to the taxi driver because he may have witnessed the two men you followed the previous night. At a point in the conversation, the taxi driver becomes reluctant to divulge information. Use your wallet on the taxi driver to hand over some cash and "refresh" the taxi driver's memory. Gabriel will automatically hand over additional money for more information. Once the conversation is exhausted (make sure by using your wallet on the driver), it's time to head inside the station.

Enter the station through the front door and examine the various items in the lobby. Walk over to Marci, the ticket attendant, and speak with her. Exhaust all the dialogue options. Once you're finished, move to the left of the ticket booth and examine the arrivals and departures bulletin board. Take special note that there is no Naples train, which Buchelli specifically mentioned he arrived on.

Once you're finished, exit the train and return to the overhead map. If you've finished everything, the time block will end.

Next: Day 1, 4:00 pm, as Gabriel