It depends on what you mean by 'unbroken timeline'.
There are instances where the space/time continuum has been interrupted and altered.
Example 1:
| Isaiah 38:8 - Behold, I will bring again the shadow of the degrees, which is gone down in the sun dial of Ahaz, ten degrees backward. So the sun returned ten degrees, by which degrees it was gone down. |
Although it was a short amount of time, we can already see that time has been altered.
Example 2:
| Joshua 10:13 - And the sun stood still, and the moon stayed, until the people had avenged themselves upon their enemies. Is not this written in the book of Jasher? So the sun stood still in the midst of heaven, and hasted not to go down about a whole day. |
Now we are up to a day.
Example 3:
2 Peter 3:8 - But, beloved, be not ignorant of this one thing, that one day is with the Lord as a thousand years, and a thousand years as one day.
Psalms 90:4 - For a thousand years in thy sight are but as yesterday when it is past, and as a watch in the night. |
I have yet to see someone who quotes the above verses connect it with its proper context. The verses are referring to the flood of Noah. Thus, if one were to take them literally, one could make the case that for every year that Noah was inside the ark, a thousand years passed on earth.
If Noah was inside the ark for say 360 days, then according to 2 Peter 3:8 and Psalms 90:4, 360,000 years passed on earth. This would give plenty of time for life to die.
Interestingly, some have traced modern humans back to around that same time:
View attachment 296733
Bible and Theory of Evolution agreeing? Oh my!
Example 4:
| Genesis 11:6-8 - And the LORD said, Behold, the people is one, and they have all one language; and this they begin to do: and now nothing will be restrained from them, which they have imagined to do. Go to, let us go down, and there confound their language, that they may not understand one another’s speech. So the LORD scattered them abroad from thence upon the face of all the earth: and they left off to build the city. |
How much time did this take? Did it happen in the twinkling of an eye? Was the space/time continuum altered in the process? The Bible is literally describing a Mandella Effect.
If one were to examine this event scientifically, one could make a case that parallel universes were involved. John travelled to a 'new heavens and new earth' in Revelation. Technically, that is a parallel unniverse.
Where did all of the languages come from? They had to have been developed somewhere. That can take hundreds or even thousands of years. They didn't come from nowhere.
Until we know exactly what happened, we cannot assume that time has been continuous since Adam and Eve.
Example 5:
| Genesis 10:25 - And unto Eber were born two sons: the name of one was Peleg; for in his days was the earth divided; and his brother’s name was Joktan. |
Is the above literal? Were there plate tectonics involved? Was earth Pangea before the flood? How long does it take for continents to drift?
The bottom line is that it would be foolish to not take into consideration all of the strange anomalies in Scripture with regards to the altering of space/time. I do not believe it has been continuous. Scripture agrees.