Yes, you can. Sometimes, a single soaker hose does not cover the entire area you want to water, and that’s when multiple hoses are needed. You might do just with another hose, or you might need several other hoses.
You can connect two soaker hoses, although it is not recommended to connect several of them since standard water pressure won’t push water as far as needed. If the area to be watered is not close to the faucet, you can connect a regular garden hose to the main water source and then connect the soaker hose to this first hose.
Many soaker hoses come with connectors that allow them to be connected to other hoses, whether they’re the same or regular hoses. Whenever you connect several hoses, make sure to adjust the water pressure until you get the desired water flow.