As for the second thing that links Acts 1:13 directly to the Gospel of Luke is...
I am going to answer that one hour later in case someone wants to give this question a try.
Now on the first day of the feast of Unleavened Bread the disciples
came to Jesus and said, “Where do you want us to prepare for you to eat the Passover?” He said, “Go into the city to a certain man and tell him, ‘The Teacher says, “My time is near. I will observe the Passover with my disciples at your house.”’” (Matthew 26:17-18)
Now on the first day of the feast of Unleavened Bread, when the Passover lamb is sacrificed, Jesus’ disciples said to him, “Where do you want us to prepare for you to eat the Passover?” He sent two of his disciples
and told them, “Go into the city, and a man carrying a jar 28 of water will meet you. Follow him. (Mark 14:12-13)
When the day for the feast of Unleavened Bread came, on which the Passover lamb had to be sacrificed. Jesus sent Peter and John
, saying, “Go and prepare the Passover for us to eat.” (Luke 22:7-8)
When they had entered Jerusalem, they went to the upstairs room where they were staying. Peter and John
, and James, and Andrew... (Acts 1:13)
I see that some people here are not as eager to answer simple questions about the Bible as to call some posters furbies.