Tools getting called sequentially

I've noticed that sometimes our tools are getting called sequentially when running an agent inside a workflow step, and I'm unsure why this is. We're really trying to cut down on latency and this is a big blocker. In the cases where we run tools sequentially, in our datadog traces, I see multiple workflow.agentic-loop.step.executionWorkflow with each calling a tool (see screenshot). In cases where the same agent runs the tools in parallel, I see a single workflow.agentic-loop.step.executionWorkflow that calls multiple tools (workflow.executionWorkflow.step.toolCallStep). I was hoping there was a flag I could set to force parallel tool calls within my workflow step. I know maxSteps is an option on an agent, but it defaults to 1 anyways so that probably isn't it. Any advice here would be amazing!