This counter tracks frames that are both misaligned -- meaning carrier sense de-asserts on a non-octet boundary -- and also contain a CRC error. The combination of misalignment plus CRC failure is a stronger signal of a physical-layer timing problem, like a marginal cable length, connector, or clock mismatch, than a CRC error alone, since the frame boundary itself wasn't even landing on a clean byte boundary. A technician seeing this counter alongside the CRC-error counter both climbing together would prioritize checking cable quality and connector seating over software configuration.