Can a Rithmic feed supply market data to my Tradovate accounts?

Yes, for matching contracts. Copilink shares live quotes across connections, so one Rithmic prop-firm account with market data can drive live P&L for Tradovate accounts that have no feed of their own. That gives your P&L limits the fastest input without leaning on slow Tradovate snapshots. Place one micro contract trade on each symbol and close it to check live P&L before relying on it.