Angraecum sesquipedale air roots

[Yourneedfulthings]

I have two new A. Sesquipedale plants with large aerial roots and many coil inside the pot, 4" plastic/ large bark.
I wish to transit them to Clay pot with lecca. That has work for me for other Angraecum and aerides.
My question 1: do I attempt to place aerial roots inside the pot?
I have a third plant A. Sesqui... in a 6" woobasket with bark and although it flower once and is alive and growing the roots look dry. It has not grown a new root for several years.
Question 2: how can I improve the plant in wood basket?
All 3 kept in a greenhouse with good humidity, very hot in summer.