[BUG]the start points are not executed in parallel

[qkxie]

Description

In the document, you said that a flow could have multiple start methods and they will run parallelly

However, when I test this feature, I have found that two start methods are just run one after another, not parallelly.

Steps to Reproduce

Just run the following code:

from crewai.flow.flow import Flow, listen, start
import time
import string


class StructuredExampleFlow(Flow):

    @start()
    def first_method(self):
        for i in range(10):
            print(i)
            time.sleep(1)
        return "first done"

    @start()
    def second_method(self):
        for x in string.ascii_lowercase:
            print(x)
            time.sleep(1)
        return "second done"

    @listen(first_method)
    def first_method_listener(self, status):
        print(status)

    @listen(second_method)
    def second_method_listener(self, status):
        print(status)



flow = StructuredExampleFlow()
flow.kickoff()

Expected behavior

Numbers and letters should be printed alternately.

Screenshots/Code snippets

Operating System

macOS Sonoma

Python Version

3.12

crewAI Version

0.95.0

crewAI Tools Version

0.25.8

Virtual Environment

Venv

Evidence

Possible Solution

None

Additional context

None