<batch:job id="job.download-stuff" restartable="true">
<batch:validator ref="downloadValidator"/>
<batch:step id="job.download-stuff.download">
    <batch:tasklet ref="salesChannelOrderDownloader" transaction-manager="transactionManager">
        <batch:transaction-attributes isolation="READ_UNCOMMITTED" propagation="NOT_SUPPORTED"/>
        <batch:listeners>
            <batch:listener ref="downloadListener"/>
            <batch:listener ref="loggingContextStepListener" />
        </batch:listeners>
    </batch:tasklet>
    <batch:next on="CONTINUE" to="job.download-stuff.process-stuff.step" />
    <batch:end on="*" />
</batch:step>
<batch:step id="job.download-stuff.process-stuff.step">
    ...
</batch:step>
<batch:listeners>
    <batch:listener ref="loggingContextJobListener"/>
</batch:listeners>

@Override
@Transactional(propagation = Propagation.REQUIRES_NEW)
public ExitStatus afterStep(StepExecution stepExecution) {
    long runSeconds = TimeUnit.NANOSECONDS.toSeconds(System.nanoTime() - nanoStart);

    // If Success - we're good
    if (stepExecution.getStatus() == BatchStatus.COMPLETED) {
        Long endTs = stepExecution.getExecutionContext().getLong("toTime");
        Date toTime = new Date(endTs);
        handleSuccess(toTime, stepExecution.getWriteCount());
        return null;
    }

    // Otherwise - record errors
    List<Throwable> failures = stepExecution.getFailureExceptions();
    handleError(failures);
    return ExitStatus.FAILED;
}

<batch:next on="CONTINUE" to="job.download-stuff.process-stuff.step" />
<batch:end on="*" />

<!-- nothing to me indicates you'd get CONTINUE here, so I changed it -->
<batch:next on="COMPLETED" to="job.download-stuff.process-stuff.step" />

<!-- if you ever have reason to stop here -->
<batch:end on="END" />

<!-- always fail on anything unexpected -->
<batch:fail on="*" />