Merge binary data of multiple packets

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Hi,

I have captured Bluetooth data which is sent in the following sequence:

1. Sent write request # contains first part of the binary blob
2. Rcvd write response
3. Sent write request # contains second part of the binary blob
4. Rcvd write response
5. ...

Now I want to merge and export all binary blob data into a single file. At the moment I export each packet's binary data individually and merge the single binary files into a single file using an external tool.

The Wireshark's "Follow - Stream" options are grayed out for the packets. Is there a faster way to export the data of selected packets?

Regards,