Line system, filling assembly including a line system and method for producing a line system

A line system for connecting a liquid intake assembly to a liquid tank, comprising:

• a first fluid line extending along a first line path for conducting a first fluid between its first end, which in operation is located closer to the liquid intake assembly, and its second end, which in operation is located closer to the liquid tank,
• a second fluid line extending at a distance orthogonal to the first line path along a second line path for conducting a second fluid between its first end, which in operation is located closer to the liquid intake assembly, and its second end, which in operation is located closer to the liquid tank,
• the first and the second fluid lines, being connected in an area between their respective first and second ends by a connecting structure extending between the first and the second fluid line, the connecting structure being integrally connected both to the first as well as to the second fluid line,
• at least one section of the first fluid line and one section of the second fluid line being arranged fluidically in parallel to each other,
• wherein the connecting structure has a fastening formation embodied in one piece with the first fluid line, and a counterpart fastening formation embodied physically separately from the fastening formation and in one piece with the second fluid line, the fastening formation and the counterpart fastening formation being joined to each other in a joining area.