Although the AXN/MXN can receive MQA encoded content, it is not possible for the device to playback full MQA files via TIDAL Connect, because the AXN/MXN does not have an MQA decoder built in to unfold the MQA files.
There are no plans to integrate MQA support into the AXN/MXN, as this would require a hardware modification to install a Full MQA Decoder.