The phrase "be simultaneous with" is grammatically correct and commonly used in written English.
It is used to describe two events or actions that happen at the same time. You can use it in a sentence like "The start of the race will be simultaneous with the sound of the gun firing." This means that the race will begin at the exact moment that the gun is fired. Another example could be "The launch of the new product will be simultaneous with the company's 10th anniversary celebration." This means that the product launch and anniversary celebration will happen at the same time. In both of these examples, the phrase "be simultaneous with" is used to show that the two events are happening concurrently and at the same time.
There have been claims that well-publicised "price cuts" at Tesco can be simultaneous with price rises on certain products.
Christians took this episode to be simultaneous with the death of Christ.
The mental wish for sex – either a specific enthusiasm to be erotically connected with another being, a desire to masturbate or a more general longing without a particular object – can precede, follow or be simultaneous with actual physiological arousal.
By that I mean my last five minutes of being famous is timing out to be simultaneous with my last five minutes of being able to have a baby.
In the light of the delicate political situation and the enduring hostility over the NATO bombing, Mr. O'Brien said Mr. Kostunica did not want to appear to be "picking favorites" and favored a restoration of diplomatic ties with Washington that would be simultaneous with "normalizing" relations with Western European nations.
Second, greater density can sometimes be simultaneous with improvements in infrastructure and enforcement, as was seen in one study in Arkhangelsk area of Russia during 2006 2010 (Kudryavtsev et al. 2012).
The negotiations were simultaneous with Amani's negotiations, but our proposals were turned down by the agent".
A second inertial observer, who is in relative motion with respect to the first, however, will disagree with him regarding which events are simultaneous with that given event.
The variations are not consecutive but are simultaneous, with certain members of the orchestra improvising their own variations at the same time on the same tune.
The emergence of a rich literary language and an original religious literature was simultaneous with a massive effort to translate texts from Greek, Armenian, and Syriac.
Except that they are compressed into a few years of story time, and the ordering of the phases given a deft kaleidoscope-shake, so that here Stalin's terrorist youth (or a reflection of it) is happening at the same time as the purges, and the space programme is simultaneous with the collectivisation famine.
