Anteverse and our world discussion

Since the Precursors are from another universe and sending their bioweapons to Earth. Then you factor in the 20 year Earth time span between kaiju attacks. Wouldn't it be less than a few days or so for the aliens? Afterall this is a wormhole they opened between dimensions and time there works differently than here. For the aliens time is slower and when they find out a kaiju dies, months later in their time they have a new one to send out. The concept art of their universe got me thinking as one painting has two of the aliens next to an assembly line of Knifehead kaiju ready to go. Hmm, if I could continue this movie into a series I'd use Falling Skies when you see a face to face between one of the aliens that is captured for information. Similar to when the fish heads, the so called Overlords of Falling Skies who control the invasion and Skitter armies. You get one of the Precursors and maybe it will give up information to the humans under the right conditions.