working modes of WiZFi310

I have a question related to data transfer while module is in TSN command mode. Let’s say that remote peer sent 50000 bytes to module. I wonder if module will report (on serial line) only one chunk of data eg. {0,192.168.12.23,2347,50000}DATA_BYTES or maybe two (or more) chunks like for example {0,192.168.12.23,2347,20000}DATA_BYTES_1 and {0,192.168.12.23,2347,30000}DATA_BYTES_2 ?
I suppose there is no rule regarding that matter, but not so sure.

Thanks