Vistara offer complimentary status match to Gold and Platinum holders of other programs (top two tiers).
As BA does not have a platinum level, the top two tiers are Gold and Silver.
Therefore, BA silver should be equal to Vistara?
BA Silver is equal to Qatar airways Gold as both are Sapphire in the One World program
Despite explaining this to Vistara, I was still declined a match. More surprising as BA have now partnered with Vistara for increased connectivity fo BA fliers.
on February 8, 2019