Sim, o SMBv1 / CIFS tem comandos especiais "AndX", que podem encadear para outro comando no mesmo pacote - embora apenas alguns comandos específicos possam fazer parte da cadeia. (Existem 8 comandos "AndX" no total - OPEN_ANDX, READ_ANDX, WRITE_ANDX e alguns outros).
Batched messages using the AndX construct were introduced in the LAN Manager 1.0 dialect. Batched messages reduce the number of messages required to complete a series of commands by sending multiple command requests or responses in a single message. SMB commands that apply the AndX construct are known as "AndX Commands", and are identified by the NT LAN Manager convention of appending "_ANDX" to the command name. Messages of this type are known as AndX Messages.
…
AndX Messages contain a construct, conceptually similar to a linked-list, that is used to connect the batched block pairs. The resulting list is referred to as an AndX Chain.
…
Each AndX Command has a specific list of commands that can follow it in an AndX Chain. Each command's list of permitted follow-on commands is documented in the command's corresponding subsection of section 2.2.4, SMB Commands.
Citado na documentação oficial do protocolo da Microsoft: