Magnetoresistance signature of two-dimensional electronic states in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Co</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:msub><mml:mi>Sn</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">S</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>

Two-dimensional (2D) Dirac bands and flat are characteristics of a kagome lattice. However, experimental studies on their electrical transport few, because three-dimensional (3D) bulk materials, consisting stacked 2D layers, dominate the transport. We report magnetoresistance (MR) study material, ${\mathrm{Co}}_{3}{\mathrm{Sn}}_{2}{\mathrm{S}}_{2}$. Based analysis temperature, magnetic field, field angle dependence resistivity, we obtain complete anatomy MR. Besides magnon MR, chirality-dependent chiral-anomaly-induced most intriguing feature is an orbital MR that scales only with out-of-plane which strongly indicates its nature. attribute it to band