Layer Estimates:

Layer: Test Data A (ID:0)
Count: 9
Extent:

XMin: -191442.472100001
YMin: 6592879.5575
XMax: -167857.895799998
YMax: 6606222.9707
Spatial Reference: 102100 (3857)

Layer: Test Data B (ID:1)
Count: 10
Extent:

XMin: -189386.764199998
YMin: 6591010.7321
XMax: -168829.684999999
YMax: 6606895.7478
Spatial Reference: 102100 (3857)