They met up in Athens.
Paul and Silas were later joined by Timothy on their missionary journey.
1st Missionary Journey - Barnabas. 2nd Missionary Journey - Silas. 3rd Missionary Journey - mostly alone, but assisted at various times by Luke, Timothy or Titus.
Timotheus
timothy
In the book of Acts it is said Paul went on his third missionary journey along with his companion who were his co workers they were young men called Silas and Barnabas.
Silas (Acts 15:40) Timothy was added at Lystra Acts 16:1-3. Luke is the recognized author of Acts and has references later in chapter 16 that use the pronoun "we" so he was apparently with them on this trip.
It depends upon the journeys. the short answer is that over all the journeys Paul was accompanied by Peter, Barnabas, Timothy, Silas, John Mark (author of the Gospel of Mark) and Luke amongst others.
In the book of Acts it is said Paul went on his third missionary journey along with his companion who were his co workers they were young men called Silas and Barnabas.
ROMAN
Silas was Pauls' companion on this journey as well as Timothy. Aquila and Priscilla went with him as far as Ephesus.
On Barnabas's second missionary journey, he took John Mark and sailed to Cyprus, which was Barnabas's home island. They aimed to revisit the churches they had established during their previous missionary work. However, their journey later diverged as Paul chose Silas for his own missionary efforts, leading to separate paths for Barnabas and Paul.
Initially it was Paul and Barnabas and Silas, but Barnabas wanted to bring John Mark, but Paul said no because John Mark had left them earlier. So Barnabas left with John Mark and Paul and Silas continued on. Timothy joins them later and Luke is also there.