Contradiction with Acts 13:4
Acts 13:4 mentions the departure from Seleucia and does not involve Samothracia or Neapolis, differing in the path of travel.
Acts 13:4: So they, being sent forth by the Holy Ghost, departed unto Seleucia; and from thence they sailed to Cyprus.
Contradiction with Acts 20:13
In Acts 20:13, the travel involves walking from Troas to Assos, not by ship, contrasting the form of travel with Acts 16:11.
Acts 20:13: And we went before to ship, and sailed unto Assos, there intending to take in Paul: for so had he appointed, minding himself to go afoot.