How does the clause “yabḥathūna” relate to “aqbala al-ṭullābu”?

Supplementary Practice 8: Rhetorical Analysis of Five Connected Passages

• It describes the students’ concurrent activity as they arrived
• It merely repeats the earlier event without giving a state
• It is a separate report unrelated to the time of arrival
• It excludes all students other than the arrivals