Spring Batch / parallel execution and multiple threads per task

Hello all
i have the following job which is comprised of 5 tasks (all independent between them).

Code:

---

<batch:split id="generateChanges" task-executor="myConcurrentTaskExecutor">
    <batch:flow>
      ... TASK1
    </batch:flow?
      <batch:flow>
      ... TASK2
    </batch:flow>
      ..
    <batch:flow>
      ... TASK5
    </batch:flow?
  ...
</batch:split>

---

i am using a Concurrent Task Executor.... it appears the tasks are ran in 5 separated threads.
However, i was wondering if, in addition to run the tasks in parallel, i can associate more than 1 th read for each tasks..
is that possible? as each of the tasks is reading a lot of data..

w/kindest regards
marco