اتَّفَقَتِ الْأَرْقَامُ، وَلَكِنَّ الْعِبَارَاتِ اخْتَلَفَتْ.
The figures agreed, but the formulations differed.
“Lākinna” introduces a corrective qualification that prevents the first observation from being understood too broadly. The initial wāw links the contrasting assertions; it does not become a circumstantial wāw merely by occurring before a later clause. The second clause adds a distinct observation rather than simply presenting an accompanying state.
If the wording were separated into “The figures agreed. The formulations differed,” the relationship would be less explicitly marked. The choice therefore depends on whether the author wishes to highlight a contrast or merely place two reports side by side.