exception handling across routes

Hi

I'm attempting to catch an exception thrown from another route as follows.

<route>
<from uri="direct:one"/>
<onException>
<exception>BlahException</exception>
<handled>
<constant>true</constant>
</handled>
<to message="handled blah"/>
</onException>
<to uri="direct:two"/>
</route>

<route>
<from uri="direct:two"/>
<throwException ref="blahException"/>
</route>

Is this actually possible? The help pages at https://camel.apache.org/exception-clause.html don't cover this scenario. I don't really want to declare a global one either as I am going to have multiple routes dealing with BlahException slightly differently.

I am using 2.13.0. Thanks.