Publishing from Workstation but can't echo from turtlebot

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Hello,

After following the Turtlebot networking setup and verifying that both the workstation and the turtlebot laptop are connected via rostopic list I've run into a problem: On the workstation I run:
rostopic pub -r10 /hello std_msgs/String "hello"
On the turtlebot laptop I run:
rostopic echo /hello

However, nothing prints on the turtlebot laptop. What's even more baffling is that when I run rostopic list on turtlebot I can see /hello listed.

Any help is much appreciated