How to convert IRR into time-weighted return different, accounts, produced, together, convert

Micholien

Is there anybody who knows how to convert IRR into time-weighted return.
We have a manager who invests into two portfolios. one is stock and one is private equity. he is using modified Dietz for stock portfolio and using IRR for private equity account. so now, I just want to know that what is the rate of return for this manager. My concern is now he is using two methods for two accounts. It is irrational to combine these two returns together because it is produced by two different methods.
Any idea for this issue.
Thank!

PieMan

read my other post.

OmarAdnan

where is your post, RecHo? Thanks