TB parameters encoded size

Referring to cuPHY/src/cuphy/cuphy.h at line # 3585
uint32_t encodedSize; /// Size in bytes of encoded Tb

Is this comment correct "size in bytes of the encoded Tb ?

If I run some test vectors I get encodedSize = G in some cases and in others it is > G. Can you please confirm what is the correct definition and please include an example.