How to use two network connections in one pc :
This trick makes use of Network Bridging to combine two networks. This will, as a result, lead to an increase in internet speed.
Step 1 – Open Control Panel and then go to Network and Sharing Center
Step 2 – Click on change adapter settings

Step 2 – Select all the active connections (use CTRL + Click to select multiple connections)
Step 3 – Right-click on one of the selected connections and then choose Bridge Connections

Step 4 – A network bridge will be created and thus your selected Internet connections will be combined.