Discrepancy Between Connected Assets and Trading Pairs

I am currently using the Connected Assets API to retrieve connected assets for specific coins, and I've encountered some discrepancies that I would like your assistance with.

When I queried the ETH.ETH coin, the response for the TRON chain indicated a connection only to TRON.USDT--TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t. However, I noticed that the Base Quote/Swap API supports the ETH.ETH/TRON.TRX trading pair.

Could you please help me understand why there is this discrepancy?