def METHOD_NAME(s46_four: S46, s46_six: S46) -> None:
    """
    Regardless of the channel layout (that is, number of channels per relay),
    channel aliases should represent the same channel. See also page 2-5 of the
    manual (e.g. B1 is *always* channel 7)
    """
    for alias in S46.channel_numbers.keys():
        if hasattr(s46_four, alias) and hasattr(s46_six, alias):
            channel_four = getattr(s46_four, alias)
            channel_six = getattr(s46_six, alias)
            assert channel_four.channel_number == channel_six.channel_number