[
    # Build (line, stop) tuples from each line
    [
        .features[].properties
        | . as $prop
        | .ZONES_ARRET[]
        | { line: $prop.id, stop: . }
    ]
    # Group everything by stop and only retrieve lines
    # This gives us all connected lines on a given stop
    | group_by(.stop)[]
    | [
        .[].line
        # Ignore buses acting as tramways
        | select(startswith("SEM_8") | not)
    ]
    # Ignore stops with only one bus line
    | select(length > 1)
    # Get all combinations, ignoring edges pointing to themselves
    | combinations(2)
    | select(.[0] != .[1])
]
# Remove duplicate edges like A-B and B-A
| unique_by(sort)[]
# Output as DOT edges
| join(" -- ")