From the picture, it is showing time out error. That can be either there is not response from server OR your RFC is taking too long to execute.
Just to help in troubleshoot,
Put an HTTP break point in your second RFC (just at the start before any BDC calls) and then call the web service from SoapUI. This should activate the ABAP debugger in you SAPGUI. Now if this happens, you can conclude that the network between soapui and SAP application server is fine and something is wrong in RFC ABAP code.
If the debugger is not activated when you call web service from soapui, this mean the problem is even before your RFC code is triggered (some system setting or may be Web serivce is not active or something like that).