  We experimentally investigate the magnetic field dependence of Andreev
transport through a region of proximity-induced superconductivity in CoSi
topological chiral semimetal. With increasing parallel to the CoSi surface
magnetic field, the sharp subgap peaks, associated with Andreev bound states,
move together to nearly-zero bias position, while there is only monotonous
peaks suppression for normal to the surface fields. The zero-bias $dV/dI$
resistance value is perfectly stable with changing the in-plane magnetic field.
As the effects are qualitatively similar for In and Nb superconducting leads,
they reflect the properties of proximized CoSi surface. The Andreev states
coalescence and stability of the zero-bias $dV/dI$ value with increasing
in-plane magnetic field are interpreted as the joined effect of the strong SOC
and the Zeeman interaction, known for proximized semiconductor nanowires. We
associate the observed magnetic field anisotropy with the recently predicted
in-plane polarized spin texture of the Fermi arcs surface states.
