Aḥmad narrates from peer Khālid, but no report by Khālid from Aḥmad is known. Which conclusion should be avoided?

Peer and Reciprocal Narration, Senior-to-Junior Reports, and Earlier/Later Pupils

• The one-way report may be aqrān
• Calling the pair mudabbaj without reverse transmission
• Actual hearing should be checked
• The direction of transmission matters