By most accounts
1. Tohei could not be thrown
2. Ueshiba could not be thrown
3. Were they doing aikido when despite their best efforts.... no one could throw them?
Could Tohei throw Ueshiba?
Could Ueshiba throw Tohei?
What if neither could throw the other?
Who then would be doing Aikido?
And do you see Aikido as being only about developing the ability to throw people; or becoming unthrowable; or both; or neither?
Is the acquisition of power that ultimately becomes simultaneously irresistible and unyielding the goal of your training?
And how will you know if you ever get there?