ToT depends upon warheads arriving in the same timeframe but there is a gap in terms of their arrival timeframe.
If we are all thinking of ballistics then you are faced with the constraints . Real targets may be covered by multiple layers (upper‑tier, lower‑tier, point defence, fighter aircraft), so a single HIMADS battery is not the only line of defence.
The purchase of S-400s to the tune also affirms they are AWARE of this and why they are focusing on hundreds of interceptors and multiple batteries, raising the number of missiles you must fire to actually saturate the system.
ToT salvos are more realistically a way to:
- Increase leakage probability (some RVs get through).
- Force the defender to expend a lot of interceptors quickly.
- Mask other assets (e.g., cruise missiles, aircraft) that exploit the chaos.
Keep this in mind that they are likely planning along similar lines and you have nothing comparable to expend or hold off on.
It is likely that your forces if using right dispersal and decoy tactics could survive a lot of their attempts - but then apply the same to their thinking.
At the end you need to be 80% performers to make it out somewhat ok versus with their spending they need to be 50%