Original: Even the leading Snowball proponent Hoffman agrees that the ~ million year long Gaskiers glaciation did not lead to global glaciation, although it was probably as intense as the late Ordovician glaciation.
Simplified: Even the leading Snowball proponent Hoffman agrees that the million year long Gaskiers glaciation did not lead to global glaciation, although it was probably as intense as the late Ordovician glaciation.