How to read "Table of Contents" from MS Word Document using win32com client?

Question

Recently i have started working on python and MS word. I tried to update the Table of contents in a .docx document using win32com.client python module(pywin32).

def update_toc(docx_file):
word = win32com.client.DispatchEx("Word.Application")
doc = word.Documents.Open(docx_file)
doc.TablesOfContents(1).Update()
print(doc.TablesOfContents)
doc.Close(SaveChanges=True)
word.Quit()

Now i am trying to look how to read the updated Table of Contents using win32com.client

Q1: Please share your suggestions or references on how to read the Table of Contents.

Q2: In the above code block doc.Close(SaveChanges=True) takes around 35 secs to perform the task. Is there any performance improvement in the Close block we can achieve?

Update (inputs from @DS_London):

To read the Table of Contents

doc.TablesOfContents(1).Range()

The above code returns the Table of Contents as a single String.