Inter-flow interference is like when mommy is cooking dinner and has to use the stove to cook multiple things at once. Sometimes when the pots and pans are too close together, the heat from one pot can make the other pot too hot or not cook properly.
In the same way, when we use the internet or other electronic devices at the same time, they can get in each other's way and slow down the things we're trying to do. This is especially true if we are using a shared network, like Wi-Fi.
Think of it like everyone trying to talk at the same time. Sometimes it's hard to hear what one person is saying if they are all talking over each other. That's because their voices are interfering with each other. In the same way, our devices' signals can interfere with each other making it harder for them to work properly.
To prevent inter-flow interference, devices need to be designed so they don't overlap or use the same signals at the same time. This way, they can all work together without getting in each other's way.