QAxWidget.dynamicCall has unexpected behavior if arguments are passed as list type

import os
import sys

if False:
    from PyQt5.QtWidgets import QApplication
    from PyQt5.QAxContainer import QAxWidget
else:
    import PySide2

    # fix for the case that anaconda qt 5.9.7 is in PATH
    if hasattr(PySide2, '__file__') and 'QT_QPA_PLATFORM_PLUGIN_PATH' not in os.environ:
        qt_qpa_platform_plugin_path = os.path.join(os.path.dirname(PySide2.__file__), 'plugins', 'platforms')
        os.environ['QT_QPA_PLATFORM_PLUGIN_PATH'] = qt_qpa_platform_plugin_path

    from PySide2.QtWidgets import QApplication
    from PySide2.QtAxContainer import QAxWidget

app = QApplication(sys.argv)
excel = QAxWidget('Excel.Application')

excel.setProperty('Visible', True)
workbooks = excel.querySubObject('WorkBooks')
workbooks.dynamicCall('Add')
workbook = excel.querySubObject('ActiveWorkBook')

help(QAxWidget.dynamicCall) # PySide2 gives:
"""
Help on method_descriptor:

dynamicCall(...)
    dynamicCall(self, name: bytes, v1: typing.Any = Invalid(typing.Any), v2: typing.Any = Invalid(typing.Any), v3: typing.Any = Invalid(typing.Any), v4: typing.Any = Invalid(typing.Any), v5: typing.Any = Invalid(typing.Any), v6: typing.Any = Invalid(typing.Any), v7: typing.Any = Invalid(typing.Any), v8: typing.Any = Invalid(typing.Any)) -> typing.Any
    dynamicCall(self, name: bytes, vars: typing.Sequence[typing.Any]) -> typing.Any
    dynamicCall(self, name: bytes, vars: typing.Sequence[typing.Any], flags: int) -> typing.Any
"""

# check method usage: https://docs.microsoft.com/en-us/office/vba/api/excel.workbook.saveas
sig = 'SaveAs(QVariant, QVariant, QVariant, QVariant, QVariant, QVariant, QVariant, QVariant, QVariant, QVariant, QVariant, QVariant)'
args = [
    os.path.join(os.getcwd(), 'filename.xlsx'),
    51,
    '',
    '',
    False,
    False,
    1,
    2,
    False,
    False,
    False,
    False,
]
flags = 0 # just setting to 0 since I have no idea

# 1) too many arguments error, due to: https://doc.qt.io/qt-5/qaxbase.html#dynamicCall
# workbook.dynamicCall(sig, *args)

# 2) unexpected behavior, works as if it was:
#
# for arg in args:
#     workbook.dynamicCall(sig, arg)
#
# but expected to behave like: https://doc.qt.io/qt-5/qaxbase.html#dynamicCall-1
workbook.dynamicCall(sig, args)

# 3) similar behavior like previous case:
#
# for arg in args:
#     workbook.dynamicCall(sig, arg, flags)
#
# also cannot find documentation on how to properly set flags???
workbook.dynamicCall(sig, args, flags)