When hasan sahih is applied to a report with only one known route, which explanation is possible?

Hasan li-Dhatihi, Sahih li-Ghayrihi, and al-Tirmidhi’s Composite Terms

• Two independent chains are simply presumed despite only one known route
• Both words necessarily signal mass transmission in this context
• In this case hasan and sahih necessarily mean anomaly and hidden defect
• It may reflect differing judgments or hesitation over the transmitter’s precision