Toilet Connector Hose Removal
In the &quot;old days&quot; there were a ton of stop valves installed that had the flex supply line integrated into the valve, i.e. all one piece. Thankfully, they started disappearing from the market. Now we are seeing Chivese stop valves with integrated flex supply; I suspect yours might be one of those.
I suspect that to replace your flex you will need to replace both the valve and the flex. However, you say there is &quot;a leak from the bowl&quot;, which shouldn't have anything to do with the supply flex because the supply flex goes to the tank fill valve, not the bowl.