There are some typesetting conventions and inconsistencies involved here revolving around the difference of slurs and ties. A slur indicates that there is no separate release of the preceding note (when the note pitch is not continued, the release coincides or even overlaps with the coming attack), a tie indicates that the release is postponed and no new attack is given, prolonging the preceding note value.
Slurs are conceptionally from note column to note column, ties are from note head to note head. So one typically gets one slur per voice, with voices usually recognised by having their notes connected by a single stem. The ends of this slur may start from above/below the top/bottom note head and may even encompass the stem. Sometimes for chords double slurs are used, namely one at the top and one at the bottom of the note column.
The chords you are asking about apparently use that convention. However, it is rather clear from the musical content that here not slurs but rather ties are intended. In that case conventions call for one tie each from every note head on the left to the corresponding note head on the right.
This kind of typesetting error resulting from the confusion of ties and slurs is comparatively common with the output of typesetting programs where the editor entering the music does not understand the difference and does not use the program's facilities for specifying either.
I am not sure this is the case here, but as a player I'd clearly interpret this as tied chords even though it is notated as slurred chords (ties tend to be flatter and more to the side of the note heads they correspond to).