Sum from different table

try this for now, then we'll fix the shot

let
    Origine = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("TY7NCoMwEIRfZchZwd38GO+FUgptD4UegoiHQHsQi4nv3ygk9rDLMPPBjHPieb2c8LqnFz+TD3GcvnRIxnmZQxjie1nxGNfghy3DzcfdE5UQfeUEMSSTJFBNNTfcQGbBSG7h1MYZraBybg4wXQE1EtUZ6ByTLUpCw2aS7UYaDS55V1QLCVJ/K0kbe3RTWdml+nbn+h8=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Colonna1 = _t, Colonna2 = _t]),
    #"Suddividi colonna in base al delimitatore" = Table.SplitColumn(Origine, "Colonna1", Splitter.SplitTextByDelimiter(" ", QuoteStyle.Csv), {"Colonna1.1", "Colonna1.2", "Colonna1.3", "Colonna1.4", "Colonna1.5", "Colonna1.6", "Colonna1.7"}),
    #"Modificato tipo" = Table.TransformColumnTypes(#"Suddividi colonna in base al delimitatore",{{"Colonna1.1", type text}, {"Colonna1.2", type text}, {"Colonna1.3", type text}, {"Colonna1.4", type text}, {"Colonna1.5", type text}, {"Colonna1.6", type text}, {"Colonna1.7", type text}, {"Colonna2", type text}}),
    #"Intestazioni alzate di livello" = Table.PromoteHeaders(#"Modificato tipo", [PromoteAllScalars=true]),
    #"Modificato tipo1" = Table.TransformColumnTypes(#"Intestazioni alzate di livello",{{"TKID", Int64.Type}, {"WOID", Int64.Type}, {"timestamp1", type date}, {"timestamp2", type date}, {"Gross_thru", Int64.Type}, {"Pause_time", Int64.Type}, {"Net_thru", Int64.Type}, {"", type text}}),
    #"Raggruppate righe" = Table.Group(#"Modificato tipo1", {"TKID"}, {{"sumGross", each List.Sum([Gross_thru]), type nullable number}, {"sumPause", each List.Sum([Pause_time]), type nullable number}, {"sumThru", each List.Sum([Net_thru]), type nullable number}})
in
    #"Raggruppate righe"