Passenger Lists

I have found some passenger lists and I admit I am a bit confused and looking for guidance and/or interpretation. There are three individuals: Aslak Berge, 30; Ingeborg Jore, 26; Signe Svalestuen, 20; all from Rauland, Telemark and all claiming Willmar, Minnesota as a destination. 1. From White Star-linjen, SAO/PAO-0201/D/Da/L0002; Emigrant, 1890-1900, with this at the top of the page, "Emigranter afgaaede med S.S. Germanic, 18/5; Christiania den 27 Mai 1892, S. S. Angelo": Date: May 18, 1892, Line: White Star, Ship: S.S. Germanic, Embark: Liverpool, Residence: Telemarken, Destination: Wilmar 2. From Oslo politidistrikt, SAO/A-10085/E/Ee/Eef/L0017: Emigrantprotokoll, 1892-893: Date: May 27, 1892, Line: Elster, Ship: S.S. Angelo, Embark: Kristiania, Residence: Silgjord, Destination: Wilmar 3. From Ellis Island database: Date: June 13, 1892, Line: Cunard, Ship: S.S. Etruria, Embark: Liverpool, Residence: Bergan, Destination: Minnesota, Passengers: Ingeborg Jore and Signe Svalestuen 4. From Ellis Island database: Date: June 15, 1892, Line: White Star, Ship: S.S. Majestic, Embark: Liverpool & Queenstown, Residence: Christa, Passenger: Aslak Berger [I believe transcription error] My biggest question is May 18, 1892 and May 27, 1892. I'm not sure how there is an embark location of Liverpool prior to the May 27, 1892 embark location of Kristiania? I think I understand that it is plausible for the parties to have separated and booked passage on separate vessels, perhaps in Liverpool, but is that, in your opinion, a common circumstance? To the best of my knowledge, none of these individuals ever made it to Willmar. They all settled in different parts of the country with passage through Minnesota. Any insight would be appreciated.