diff --git a/experiments/2025-03-18/src/operations/connect.rs b/experiments/2025-03-18/src/operations/connect.rs
index 7e116ee1c..79b09ba4d 100644
--- a/experiments/2025-03-18/src/operations/connect.rs
+++ b/experiments/2025-03-18/src/operations/connect.rs
@@ -55,7 +55,10 @@ fn build_connecting_faces(bottom: &Face, top: &Face) -> Vec<Handle<Face>> {
         .half_edges_with_end_vertex()
         .zip(top.half_edges_with_end_vertex())
         .map(
-            |((bottom_half_edge, bottom_half_edge_end), (top_a, top_b))| {
+            |(
+                (bottom_half_edge, bottom_half_edge_end),
+                (top_a, top_half_edge_end),
+            )| {
                 let is_internal = match [
                     bottom_half_edge.is_internal,
                     top_a.is_internal,
@@ -72,7 +75,7 @@ fn build_connecting_faces(bottom: &Face, top: &Face) -> Vec<Handle<Face>> {
 
                 let a = &bottom_half_edge.start;
                 let b = bottom_half_edge_end;
-                let c = top_b;
+                let c = top_half_edge_end;
 
                 let surface = Handle::new(Surface {
                     geometry: Box::new(Plane::from_points(